Data on age: By country
Country data as of November 2020
| ISO Code | Country | Country without accent | Chamber | Structure of parliament | Chamber type | Last election | Election date sort | First session | Average age | % 30 or under | % 40 or under | % 45 or under |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AF | Afghanistan | Afghanistan | House of the People | Bicameral | Lower chamber | 20 Oct 2018 - 21 Oct 2018 | 2018-10-20 00:00:00 | 26 Apr 2019 | - | 5.65 | 37.10 | 50.81 |
| AF | Afghanistan | Afghanistan | House of Elders | Bicameral | Upper chamber | 10 Jan 2015 | 2015-01-10 00:00:00 | 10 Jan 2015 | - | 0.00 | 16.18 | 41.18 |
| AL | Albania | Albania | Parliament | Unicameral | 25 Jun 2017 | 2017-06-25 00:00:00 | 09 Sep 2017 | 49.74 | 4.10 | 18.03 | 31.15 | |
| DZ | Algeria | Algeria | National People's Assembly | Bicameral | Lower chamber | 04 May 2017 | 2017-05-04 00:00:00 | 23 May 2017 | - | - | - | - |
| DZ | Algeria | Algeria | Council of the Nation | Bicameral | Upper chamber | 29 Dec 2018 | 2018-12-29 00:00:00 | 29 Jan 2019 | - | - | - | - |
| AD | Andorra | Andorra | General Council | Unicameral | 07 Apr 2019 | 2019-04-07 00:00:00 | 02 May 2019 | 48.89 | 3.57 | 10.71 | 35.71 | |
| AO | Angola | Angola | National Assembly | Unicameral | 23 Aug 2017 | 2017-08-23 00:00:00 | 28 Sep 2017 | - | 0.56 | 11.11 | 17.78 | |
| AG | Antigua and Barbuda | Antigua and Barbuda | House of Representatives | Bicameral | Lower chamber | 21 Mar 2018 | 2018-03-21 00:00:00 | 26 Mar 2018 | - | - | - | - |
| AG | Antigua and Barbuda | Antigua and Barbuda | Senate | Bicameral | Upper chamber | 26 Mar 2018 | 2018-03-26 00:00:00 | 26 Mar 2018 | - | - | - | - |
| AR | Argentina | Argentina | Chamber of Deputies | Bicameral | Lower chamber | 27 Oct 2019 | 2019-10-27 00:00:00 | 10 Dec 2019 | 51.73 | 1.95 | 18.68 | 36.19 |
| AR | Argentina | Argentina | Senate | Bicameral | Upper chamber | 27 Oct 2019 | 2019-10-27 00:00:00 | 10 Dec 2019 | 57 | 0.00 | 6.94 | 12.50 |
| AM | Armenia | Armenia | National Assembly | Unicameral | 09 Dec 2018 | 2018-12-09 00:00:00 | 14 Jan 2019 | 40.02 | 12.12 | 57.58 | 71.97 | |
| AU | Australia | Australia | House of Representatives | Bicameral | Lower chamber | 18 May 2019 | 2019-05-18 00:00:00 | 02 Jul 2019 | 50.71 | 0.00 | 13.91 | 25.83 |
| AU | Australia | Australia | Senate | Bicameral | Upper chamber | 18 May 2019 | 2019-05-18 00:00:00 | 02 Jul 2019 | 50 | 2.63 | 14.47 | 28.95 |
| AT | Austria | Austria | National Council | Bicameral | Lower chamber | 29 Sep 2019 | 2019-09-29 00:00:00 | 23 Oct 2019 | 47.29 | 7.65 | 27.87 | 43.72 |
| AT | Austria | Austria | Federal Council | Bicameral | Upper chamber | - | - | 52.02 | 3.28 | 18.03 | 26.23 | |
| AZ | Azerbaijan | Azerbaijan | National Assembly | Unicameral | 09 Feb 2020 | 2020-02-09 00:00:00 | 10 Mar 2020 | - | 1.79 | 14.29 | 30.36 | |
| BS | Bahamas | Bahamas | House of Assembly | Bicameral | Lower chamber | 10 May 2017 | 2017-05-10 00:00:00 | 24 May 2017 | - | - | - | - |
| BS | Bahamas | Bahamas | Senate | Bicameral | Upper chamber | 24 May 2017 | 2017-05-24 00:00:00 | 24 May 2017 | - | - | - | - |
| BH | Bahrain | Bahrain | Council of Representatives | Bicameral | Lower chamber | 24 Nov 2018 - 01 Dec 2018 | 2018-11-24 00:00:00 | - | 46.8 | 2.50 | 25.00 | 47.50 |
| BH | Bahrain | Bahrain | Shura Council | Bicameral | Upper chamber | 09 Dec 2018 | 2018-12-09 00:00:00 | 12 Dec 2018 | - | - | - | - |
| BD | Bangladesh | Bangladesh | Parliament | Unicameral | 30 Dec 2018 | 2018-12-30 00:00:00 | 30 Jan 2019 | 59.48 | 0.29 | 5.71 | 10.57 | |
| BB | Barbados | Barbados | House of Assembly | Bicameral | Lower chamber | 24 May 2018 | 2018-05-24 00:00:00 | 05 Jun 2018 | - | - | - | - |
| BB | Barbados | Barbados | Senate | Bicameral | Upper chamber | 05 Jun 2018 | 2018-06-05 00:00:00 | 05 Jun 2018 | - | - | - | - |
| BY | Belarus | Belarus | House of Representatives | Bicameral | Lower chamber | 17 Nov 2019 | 2019-11-17 00:00:00 | 06 Dec 2019 | 50.5 | 1.82 | 13.64 | 20.91 |
| BY | Belarus | Belarus | Council of the Republic | Bicameral | Upper chamber | 07 Nov 2019 | 2019-11-07 00:00:00 | 06 Dec 2019 | 52.45 | 0.00 | 5.00 | 16.67 |
| BE | Belgium | Belgium | House of Representatives | Bicameral | Lower chamber | 26 May 2019 | 2019-05-26 00:00:00 | 20 Jun 2019 | 46.1 | 3.33 | 28.00 | 54.00 |
| BE | Belgium | Belgium | Senate | Bicameral | Upper chamber | 04 Jul 2019 | 2019-07-04 00:00:00 | 04 Jul 2019 | 45.45 | 10.00 | 41.67 | 48.33 |
| BZ | Belize | Belize | House of Representatives | Bicameral | Lower chamber | 11 Nov 2020 | 2020-11-11 00:00:00 | 11 Dec 2020 | - | - | - | - |
| BZ | Belize | Belize | Senate | Bicameral | Upper chamber | 13 Nov 2015 | 2015-11-13 00:00:00 | 13 Nov 2015 | - | - | - | - |
| BJ | Benin | Benin | National Assembly | Unicameral | 28 Apr 2019 | 2019-04-28 00:00:00 | 16 May 2019 | 54.32 | 0.00 | 4.82 | 12.05 | |
| BT | Bhutan | Bhutan | National Assembly | Bicameral | Lower chamber | 18 Oct 2018 | 2018-10-18 00:00:00 | 31 Oct 2018 | - | - | - | - |
| BT | Bhutan | Bhutan | National Council | Bicameral | Upper chamber | 20 Apr 2018 | 2018-04-20 00:00:00 | 10 May 2018 | - | - | - | - |
| BO | Bolivia (Plurinational State of) | Bolivia (Plurinational State of) | Chamber of Deputies | Bicameral | Lower chamber | 18 Oct 2020 | 2020-10-18 00:00:00 | 03 Nov 2020 | - | - | - | - |
| BO | Bolivia (Plurinational State of) | Bolivia (Plurinational State of) | Chamber of Senators | Bicameral | Upper chamber | 18 Oct 2020 | 2020-10-18 00:00:00 | 03 Nov 2020 | - | - | - | - |
| BA | Bosnia and Herzegovina | Bosnia and Herzegovina | House of Representatives | Bicameral | Lower chamber | 07 Oct 2018 | 2018-10-07 00:00:00 | 06 Dec 2018 | 54.26 | 0.00 | 4.76 | 19.05 |
| BA | Bosnia and Herzegovina | Bosnia and Herzegovina | House of Peoples | Bicameral | Upper chamber | 28 Feb 2019 | 2019-02-28 00:00:00 | 28 Feb 2019 | 59.8 | 0.00 | 0.00 | 6.67 |
| BW | Botswana | Botswana | National Assembly | Unicameral | 23 Oct 2019 | 2019-10-23 00:00:00 | 05 Nov 2019 | - | 0.00 | 7.94 | 15.87 | |
| BR | Brazil | Brazil | Chamber of Deputies | Bicameral | Lower chamber | 07 Oct 2018 | 2018-10-07 00:00:00 | 01 Feb 2019 | - | - | - | - |
| BR | Brazil | Brazil | Federal Senate | Bicameral | Upper chamber | 07 Oct 2018 | 2018-10-07 00:00:00 | 01 Feb 2019 | - | - | - | - |
| BN | Brunei Darussalam | Brunei Darussalam | Legislative Council | Unicameral | 13 Jan 2017 | 2017-01-13 00:00:00 | - | - | - | - | - | |
| BG | Bulgaria | Bulgaria | National Assembly | Unicameral | 26 Mar 2017 | 2017-03-26 00:00:00 | 19 Apr 2017 | - | 2.51 | 23.01 | 41.42 | |
| BF | Burkina Faso | Burkina Faso | National Assembly | Unicameral | 22 Nov 2020 | 2020-11-22 00:00:00 | 28 Dec 2020 | - | - | - | - | |
| BI | Burundi | Burundi | National Assembly | Bicameral | Lower chamber | 20 May 2020 | 2020-05-20 00:00:00 | 04 Aug 2020 | 55 | - | - | - |
| BI | Burundi | Burundi | Senate | Bicameral | Upper chamber | 20 Jul 2020 | 2020-07-20 00:00:00 | 20 Aug 2020 | 48 | 0.00 | 28.21 | 41.03 |
| CV | Cabo Verde | Cabo Verde | National Assembly | Unicameral | 20 Mar 2016 | 2016-03-20 00:00:00 | 20 Apr 2016 | - | 0.00 | 33.33 | 45.83 | |
| KH | Cambodia | Cambodia | National Assembly | Bicameral | Lower chamber | 29 Jul 2018 | 2018-07-29 00:00:00 | 05 Sep 2018 | - | - | - | - |
| KH | Cambodia | Cambodia | Senate | Bicameral | Upper chamber | 25 Feb 2018 | 2018-02-25 00:00:00 | 23 Apr 2018 | - | - | - | - |
| CM | Cameroon | Cameroon | National Assembly | Bicameral | Lower chamber | 09 Feb 2020 - 22 Mar 2020 | 2020-02-09 00:00:00 | 10 Mar 2020 | 55 | 1.11 | 8.89 | 18.33 |
| CM | Cameroon | Cameroon | Senate | Bicameral | Upper chamber | 25 Mar 2018 | 2018-03-25 00:00:00 | 02 May 2018 | - | - | - | - |
| CA | Canada | Canada | House of Commons | Bicameral | Lower chamber | 21 Oct 2019 | 2019-10-21 00:00:00 | - | - | - | - | - |
| CA | Canada | Canada | Senate | Bicameral | Upper chamber | - | - | - | - | - | - | |
| CF | Central African Republic | Central African Republic | National Assembly | Unicameral | 14 Feb 2016 - 31 Mar 2016 | 2016-02-14 00:00:00 | 06 May 2016 | - | - | - | - | |
| TD | Chad | Chad | National Assembly | Unicameral | 13 Feb 2011 - 06 May 2011 | 2011-02-13 00:00:00 | 23 Jun 2011 | - | 0.00 | 12.02 | 22.95 | |
| CL | Chile | Chile | Chamber of Deputies | Bicameral | Lower chamber | 19 Nov 2017 | 2017-11-19 00:00:00 | 11 Mar 2017 | 49.7 | 8.39 | 26.45 | 41.29 |
| CL | Chile | Chile | Senate | Bicameral | Upper chamber | 19 Nov 2017 | 2017-11-19 00:00:00 | 11 Mar 2018 | - | - | - | - |
| CN | China | China | National People's Congress | Unicameral | 05 Mar 2018 | 2018-03-05 00:00:00 | 05 Mar 2018 | - | 1.24 | 5.61 | 11.56 | |
| CO | Colombia | Colombia | House of Representatives | Bicameral | Lower chamber | 11 Mar 2018 - 18 Mar 2018 | 2018-03-11 00:00:00 | 20 Jul 2018 | - | 7.27 | 32.73 | 46.67 |
| CO | Colombia | Colombia | Senate | Bicameral | Upper chamber | 11 Mar 2018 - 18 Mar 2018 | 2018-03-11 00:00:00 | 20 Jul 2018 | 49 | 0.00 | 16.98 | 33.02 |
| KM | Comoros | Comoros | Assembly of the Union | Unicameral | 19 Jan 2020 - 23 Feb 2020 | 2020-01-19 00:00:00 | 03 Apr 2020 | - | - | - | - | |
| CG | Congo | Congo | National Assembly | Bicameral | Lower chamber | 16 Jul 2017 - 30 Jul 2017 | 2017-07-16 00:00:00 | 19 Aug 2017 | - | 1.99 | 11.92 | 20.53 |
| CG | Congo | Congo | Senate | Bicameral | Upper chamber | 31 Aug 2017 | 2017-08-31 00:00:00 | - | - | 0.00 | 0.00 | 0.00 |
| CR | Costa Rica | Costa Rica | Legislative Assembly | Unicameral | 04 Feb 2018 | 2018-02-04 00:00:00 | 01 May 2018 | 48.89 | 3.51 | 33.33 | 45.61 | |
| CI | Côte d'Ivoire | Cote d'Ivoire | National Assembly | Bicameral | Lower chamber | 18 Dec 2016 | 2016-12-18 00:00:00 | 09 Jan 2017 | - | - | - | - |
| CI | Côte d'Ivoire | Cote d'Ivoire | Senate | Bicameral | Upper chamber | 25 Mar 2018 | 2018-03-25 00:00:00 | 05 Apr 2018 | - | - | - | - |
| HR | Croatia | Croatia | Croatian Parliament | Unicameral | 05 Jul 2020 | 2020-07-05 00:00:00 | 22 Jul 2020 | - | 0.66 | 22.52 | 39.74 | |
| CU | Cuba | Cuba | National Assembly of the People's Power | Unicameral | 11 Mar 2018 | 2018-03-11 00:00:00 | 19 Apr 2018 | - | - | - | - | |
| CY | Cyprus | Cyprus | House of Representatives | Unicameral | 22 May 2016 | 2016-05-22 00:00:00 | 02 Jun 2016 | - | 1.79 | 12.50 | 25.00 | |
| CZ | Czech Republic | Czech Republic | Chamber of Deputies | Bicameral | Lower chamber | 20 Oct 2017 - 21 Oct 2017 | 2017-10-20 00:00:00 | 20 Oct 2017 | 50.02 | 2.50 | 20.00 | 36.00 |
| CZ | Czech Republic | Czech Republic | Senate | Bicameral | Upper chamber | 02 Oct 2020 - 10 Oct 2020 | 2020-10-02 00:00:00 | 11 Nov 2020 | 59.1 | 0.00 | 0.00 | 4.94 |
| KP | Democratic People's Republic of Korea | Democratic People's Republic of Korea | Supreme People's Assembly | Unicameral | 10 Mar 2019 | 2019-03-10 00:00:00 | 11 Apr 2019 | - | - | - | - | |
| CD | Democratic Republic of the Congo | Democratic Republic of the Congo | National Assembly | Bicameral | Lower chamber | 30 Dec 2018 - 31 Mar 2019 | 2018-12-30 00:00:00 | 28 Jan 2019 | 51.7 | - | - | - |
| CD | Democratic Republic of the Congo | Democratic Republic of the Congo | Senate | Bicameral | Upper chamber | 15 Mar 2019 | 2019-03-15 00:00:00 | 05 Apr 2019 | 57 | 0.92 | 11.01 | 18.35 |
| DK | Denmark | Denmark | The Danish Parliament | Unicameral | 05 Jun 2019 | 2019-06-05 00:00:00 | 20 Jun 2019 | 46.7 | 9.50 | 30.73 | 49.72 | |
| DJ | Djibouti | Djibouti | National Assembly | Unicameral | 23 Feb 2018 | 2018-02-23 00:00:00 | 15 Mar 2018 | 49.17 | 9.23 | 29.23 | 38.46 | |
| DM | Dominica | Dominica | House of Assembly | Unicameral | 06 Dec 2019 | 2019-12-06 00:00:00 | 10 Feb 2020 | - | - | - | - | |
| DO | Dominican Republic | Dominican Republic | Chamber of Deputies | Bicameral | Lower chamber | 05 Jul 2020 | 2020-07-05 00:00:00 | 16 Aug 2020 | - | - | - | - |
| DO | Dominican Republic | Dominican Republic | Senate | Bicameral | Upper chamber | 05 Jul 2020 | 2020-07-05 00:00:00 | 16 Aug 2020 | - | - | - | - |
| EC | Ecuador | Ecuador | National Assembly | Unicameral | 19 Feb 2017 | 2017-02-19 00:00:00 | 14 May 2017 | - | 5.84 | 34.31 | 46.72 | |
| EG | Egypt | Egypt | House of Representatives | Bicameral | Lower chamber | 24 Oct 2020 - 08 Dec 2020 | 2020-10-24 00:00:00 | 12 Jan 2021 | - | 1.01 | 11.76 | 21.51 |
| EG | Egypt | Egypt | Senate | Bicameral | Upper chamber | 11 Aug 2020 - 09 Sep 2020 | 2020-08-11 00:00:00 | 18 Oct 2020 | - | - | - | - |
| SV | El Salvador | El Salvador | Legislative Assembly | Unicameral | 04 Mar 2018 | 2018-03-04 00:00:00 | 01 May 2018 | 50.92 | 1.19 | 25.00 | 35.71 | |
| GQ | Equatorial Guinea | Equatorial Guinea | Chamber of Deputies | Bicameral | Lower chamber | 12 Nov 2017 | 2017-11-12 00:00:00 | 12 Jan 2018 | - | - | - | - |
| GQ | Equatorial Guinea | Equatorial Guinea | Senate | Bicameral | Upper chamber | 12 Nov 2017 | 2017-11-12 00:00:00 | 12 Jan 2018 | 63.9 | 0.00 | 0.00 | 7.04 |
| ER | Eritrea | Eritrea | National Assembly | Unicameral | 01 Feb 1994 | 1994-02-01 00:00:00 | 01 Feb 1994 | - | - | - | - | |
| EE | Estonia | Estonia | The Estonian Parliament | Unicameral | 03 Mar 2019 | 2019-03-03 00:00:00 | 04 Apr 2019 | 51.62 | 2.97 | 19.80 | 35.64 | |
| SZ | Eswatini | Eswatini | House of Assembly | Bicameral | Lower chamber | 21 Sep 2018 | 2018-09-21 00:00:00 | 11 Oct 2018 | - | - | - | - |
| SZ | Eswatini | Eswatini | Senate | Bicameral | Upper chamber | 23 Oct 2018 | 2018-10-23 00:00:00 | 23 Oct 2018 | - | - | - | - |
| ET | Ethiopia | Ethiopia | House of Peoples' Representatives | Bicameral | Lower chamber | 24 May 2015 | 2015-05-24 00:00:00 | - | - | 6.10 | 35.37 | 63.62 |
| ET | Ethiopia | Ethiopia | House of the Federation | Bicameral | Upper chamber | 05 Oct 2015 | 2015-10-05 00:00:00 | - | - | - | - | - |
| FJ | Fiji | Fiji | Parliament | Unicameral | 14 Nov 2018 | 2018-11-14 00:00:00 | 26 Nov 2018 | - | 0.00 | 11.76 | 19.61 | |
| FI | Finland | Finland | Parliament | Unicameral | 14 Apr 2019 | 2019-04-14 00:00:00 | 24 Apr 2019 | 48 | 3.50 | 29.00 | 45.00 | |
| FR | France | France | National Assembly | Bicameral | Lower chamber | 11 Jun 2017 - 18 Jun 2017 | 2017-06-11 00:00:00 | 27 Jun 2017 | - | 5.55 | 23.22 | 36.92 |
| FR | France | France | Senate | Bicameral | Upper chamber | 27 Sep 2020 | 2020-09-27 00:00:00 | 01 Oct 2020 | 60.44 | 0.29 | 3.45 | 7.18 |
| GA | Gabon | Gabon | National Assembly | Bicameral | Lower chamber | 06 Oct 2018 - 27 Oct 2018 | 2018-10-06 00:00:00 | 11 Jan 2019 | - | - | - | - |
| GA | Gabon | Gabon | Senate | Bicameral | Upper chamber | 13 Dec 2014 | 2014-12-13 00:00:00 | 27 Feb 2015 | - | 0.00 | 0.00 | 1.00 |
| GM | Gambia (The) | Gambia (The) | National Assembly | Unicameral | 06 Apr 2017 | 2017-04-06 00:00:00 | 11 Apr 2017 | - | 10.34 | 36.21 | 56.90 | |
| GE | Georgia | Georgia | Parliament | Unicameral | 31 Oct 2020 - 21 Nov 2020 | 2020-10-31 00:00:00 | 13 Dec 2020 | - | 0.67 | 30.67 | 52.00 | |
| DE | Germany | Germany | German Bundestag | Bicameral | Lower chamber | 24 Sep 2017 | 2017-09-24 00:00:00 | 24 Oct 2017 | 49.4 | 0.42 | 11.57 | 23.27 |
| DE | Germany | Germany | Federal Council | Bicameral | Upper chamber | - | - | - | - | - | - | |
| GH | Ghana | Ghana | Parliament | Unicameral | 07 Dec 2016 | 2016-12-07 00:00:00 | 07 Jan 2017 | - | - | - | - | |
| GR | Greece | Greece | Hellenic Parliament | Unicameral | 07 Jul 2019 | 2019-07-07 00:00:00 | 17 Jul 2019 | 53.85 | 0.67 | 12.33 | 24.67 | |
| GD | Grenada | Grenada | House of Representatives | Bicameral | Lower chamber | 13 Mar 2018 | 2018-03-13 00:00:00 | 27 Apr 2018 | - | - | - | - |
| GD | Grenada | Grenada | Senate | Bicameral | Upper chamber | 27 Apr 2018 | 2018-04-27 00:00:00 | 27 Apr 2018 | - | - | - | - |
| GT | Guatemala | Guatemala | Congress of the Republic | Unicameral | 16 Jun 2019 | 2019-06-16 00:00:00 | 14 Jan 2020 | 47 | 6.88 | 29.38 | 41.88 | |
| GN | Guinea | Guinea | National Assembly | Unicameral | 22 Mar 2020 | 2020-03-22 00:00:00 | 22 Apr 2020 | - | - | - | - | |
| GW | Guinea-Bissau | Guinea-Bissau | People's National Assembly | Unicameral | 10 Mar 2019 | 2019-03-10 00:00:00 | 18 Apr 2019 | - | - | - | - | |
| GY | Guyana | Guyana | National Assembly | Unicameral | 02 Mar 2020 | 2020-03-02 00:00:00 | 01 Sep 2020 | 47.83 | 1.49 | 31.34 | 46.27 | |
| HT | Haiti | Haiti | Chamber of Deputies | Bicameral | Lower chamber | 09 Aug 2015 - 25 Oct 2015 | 2015-08-09 00:00:00 | 11 Jan 2016 | - | 0.00 | 14.53 | 41.03 |
| HT | Haiti | Haiti | Senate | Bicameral | Upper chamber | 20 Nov 2016 - 29 Jan 2017 | 2016-11-20 00:00:00 | 10 Jan 2017 | - | - | - | - |
| HN | Honduras | Honduras | National Congress | Unicameral | 26 Nov 2017 | 2017-11-26 00:00:00 | 21 Jan 2018 | - | - | - | - | |
| HU | Hungary | Hungary | National Assembly | Unicameral | 08 Apr 2018 | 2018-04-08 00:00:00 | 08 May 2018 | - | 1.01 | 18.09 | 32.66 | |
| IS | Iceland | Iceland | Parliament | Unicameral | 28 Oct 2017 | 2017-10-28 00:00:00 | 14 Dec 2017 | 49.14 | 4.76 | 20.63 | 36.51 | |
| IN | India | India | House of the People | Bicameral | Lower chamber | 11 Apr 2019 - 19 May 2019 | 2019-04-11 00:00:00 | 17 Jun 2019 | 51 | 0.79 | 10.71 | 20.24 |
| IN | India | India | Council of States | Bicameral | Upper chamber | 19 Jun 2020 - 02 Nov 2020 | 2020-06-19 00:00:00 | 14 Sep 2020 | 62.23 | 0.00 | 0.49 | 4.41 |
| ID | Indonesia | Indonesia | House of Representatives | Unicameral | 17 Apr 2019 | 2019-04-17 00:00:00 | 01 Oct 2019 | 51.62 | 3.83 | 14.96 | 26.26 | |
| IR | Iran (Islamic Republic of) | Iran (Islamic Republic of) | Islamic Parliament of Iran | Unicameral | 21 Feb 2020 - 11 Sep 2020 | 2020-02-21 00:00:00 | 27 May 2020 | - | - | - | - | |
| IQ | Iraq | Iraq | Council of Representatives of Iraq | Unicameral | 12 May 2018 | 2018-05-12 00:00:00 | 03 Sep 2018 | - | - | - | - | |
| IE | Ireland | Ireland | House of Representatives | Bicameral | Lower chamber | 08 Feb 2020 | 2020-02-08 00:00:00 | 20 Feb 2020 | 48.5 | 3.75 | 18.75 | 41.25 |
| IE | Ireland | Ireland | Senate | Bicameral | Upper chamber | 30 Mar 2020 - 31 Mar 2020 | 2020-03-30 00:00:00 | 29 Jun 2020 | - | 1.69 | 18.64 | 27.12 |
| IL | Israel | Israel | Parliament | Unicameral | 02 Mar 2020 | 2020-03-02 00:00:00 | 16 Mar 2020 | 52.44 | 0.00 | 17.50 | 31.67 | |
| IT | Italy | Italy | Chamber of Deputies | Bicameral | Lower chamber | 04 Mar 2018 | 2018-03-04 00:00:00 | 24 Mar 2018 | 44.25 | 6.83 | 42.70 | 59.52 |
| IT | Italy | Italy | Senate | Bicameral | Upper chamber | 04 Mar 2018 | 2018-03-04 00:00:00 | 24 Mar 2018 | 53.14 | 0.00 | 2.81 | 26.88 |
| JM | Jamaica | Jamaica | House of Representatives | Bicameral | Lower chamber | 03 Sep 2020 | 2020-09-03 00:00:00 | 15 Sep 2020 | - | - | - | - |
| JM | Jamaica | Jamaica | Senate | Bicameral | Upper chamber | 15 Sep 2020 | 2020-09-15 00:00:00 | 15 Sep 2020 | - | 0.00 | 19.05 | 33.33 |
| JP | Japan | Japan | House of Representatives | Bicameral | Lower chamber | 22 Oct 2017 | 2017-10-22 00:00:00 | 01 Nov 2017 | - | 0.00 | 8.39 | 22.15 |
| JP | Japan | Japan | House of Councillors | Bicameral | Upper chamber | 21 Jul 2019 | 2019-07-21 00:00:00 | 01 Aug 2019 | 56.11 | 0.00 | 5.71 | 18.78 |
| JO | Jordan | Jordan | House of Representatives | Bicameral | Lower chamber | 10 Nov 2020 | 2020-11-10 00:00:00 | 10 Dec 2020 | 51 | - | - | - |
| JO | Jordan | Jordan | Senate | Bicameral | Upper chamber | 27 Sep 2020 | 2020-09-27 00:00:00 | - | - | - | - | - |
| KZ | Kazakhstan | Kazakhstan | House of Representatives | Bicameral | Lower chamber | 20 Mar 2016 | 2016-03-20 00:00:00 | 25 Mar 2016 | - | 3.77 | 7.55 | 11.32 |
| KZ | Kazakhstan | Kazakhstan | Senate | Bicameral | Upper chamber | 12 Aug 2020 | 2020-08-12 00:00:00 | 01 Sep 2020 | - | - | - | - |
| KE | Kenya | Kenya | National Assembly | Bicameral | Lower chamber | 08 Aug 2017 | 2017-08-08 00:00:00 | 31 Aug 2017 | 50.73 | - | - | - |
| KE | Kenya | Kenya | Senate | Bicameral | Upper chamber | 08 Aug 2017 | 2017-08-08 00:00:00 | 31 Aug 2017 | 51.22 | 1.47 | 20.59 | 30.88 |
| KI | Kiribati | Kiribati | House of Assembly | Unicameral | 14 Apr 2020 - 22 Apr 2020 | 2020-04-14 00:00:00 | 22 May 2020 | - | - | - | - | |
| KW | Kuwait | Kuwait | National Assembly | Unicameral | 26 Nov 2016 | 2016-11-26 00:00:00 | 11 Dec 2016 | - | 0.00 | 18.00 | 30.00 | |
| KG | Kyrgyzstan | Kyrgyzstan | Supreme Council | Unicameral | 04 Oct 2020 | 2020-10-04 00:00:00 | - | - | 4.17 | 35.00 | 54.17 | |
| LA | Lao People's Democratic Republic | Lao People's Democratic Republic | National Assembly | Unicameral | 20 Mar 2016 | 2016-03-20 00:00:00 | 20 Apr 2016 | - | - | - | - | |
| LV | Latvia | Latvia | Parliament | Unicameral | 06 Oct 2018 | 2018-10-06 00:00:00 | 06 Nov 2018 | 47.3 | 4.00 | 27.00 | 51.00 | |
| LB | Lebanon | Lebanon | National Assembly | Unicameral | 06 May 2018 | 2018-05-06 00:00:00 | 23 May 2018 | - | - | - | - | |
| LS | Lesotho | Lesotho | National Assembly | Bicameral | Lower chamber | 03 Jun 2017 | 2017-06-03 00:00:00 | 12 Jun 2017 | - | - | - | - |
| LS | Lesotho | Lesotho | Senate | Bicameral | Upper chamber | 11 Jul 2017 | 2017-07-11 00:00:00 | 11 Jul 2017 | - | - | - | - |
| LR | Liberia | Liberia | House of Representatives | Bicameral | Lower chamber | 10 Oct 2017 | 2017-10-10 00:00:00 | 15 Jan 2018 | - | - | - | - |
| LR | Liberia | Liberia | The Liberian Senate | Bicameral | Upper chamber | 20 Dec 2014 | 2014-12-20 00:00:00 | 14 Jan 2015 | - | - | - | - |
| LY | Libya | Libya | House of Representatives | Unicameral | 25 Jun 2014 | 2014-06-25 00:00:00 | 04 Aug 2014 | - | - | - | - | |
| LI | Liechtenstein | Liechtenstein | Diet | Unicameral | 05 Feb 2017 | 2017-02-05 00:00:00 | 03 May 2017 | 54.24 | 0.00 | 4.00 | 16.00 | |
| LT | Lithuania | Lithuania | Parliament | Unicameral | 11 Oct 2020 - 25 Oct 2020 | 2020-10-11 00:00:00 | 13 Nov 2020 | 49 | 2.84 | 29.08 | 45.39 | |
| LU | Luxembourg | Luxembourg | Chamber of Deputies | Unicameral | 14 Oct 2018 | 2018-10-14 00:00:00 | 30 Oct 2018 | 53.07 | 3.33 | 20.00 | 28.33 | |
| MG | Madagascar | Madagascar | National Assembly | Bicameral | Lower chamber | 27 May 2019 | 2019-05-27 00:00:00 | 16 Jul 2019 | 49.88 | 0.00 | 13.89 | 31.25 |
| MG | Madagascar | Madagascar | Senate | Bicameral | Upper chamber | 29 Dec 2015 | 2015-12-29 00:00:00 | 09 Feb 2016 | - | - | - | - |
| MW | Malawi | Malawi | National Assembly | Unicameral | 21 May 2019 | 2019-05-21 00:00:00 | 19 Jun 2019 | - | - | - | - | |
| MY | Malaysia | Malaysia | House of Representatives | Bicameral | Lower chamber | 09 May 2018 | 2018-05-09 00:00:00 | 16 Jul 2018 | 55.89 | 0.90 | 10.36 | 18.02 |
| MY | Malaysia | Malaysia | Senate | Bicameral | Upper chamber | - | - | - | - | - | - | |
| MV | Maldives | Maldives | People's Majlis | Unicameral | 06 Apr 2019 | 2019-04-06 00:00:00 | 28 May 2019 | 43.75 | 3.45 | 26.44 | 59.77 | |
| ML | Mali | Mali | Transitional National Council | Unicameral | 29 Mar 2020 - 19 Apr 2020 | 2020-03-29 00:00:00 | 11 May 2020 | - | - | - | - | |
| MT | Malta | Malta | House of Representatives | Unicameral | 03 Jun 2017 | 2017-06-03 00:00:00 | 24 Jun 2017 | 46.7 | 5.97 | 26.87 | 46.27 | |
| MH | Marshall Islands | Marshall Islands | Parliament | Unicameral | 18 Nov 2019 | 2019-11-18 00:00:00 | 06 Jan 2020 | - | - | - | - | |
| MR | Mauritania | Mauritania | National Assembly | Unicameral | 01 Sep 2018 - 15 Sep 2018 | 2018-09-01 00:00:00 | 08 Oct 2018 | - | - | - | - | |
| MU | Mauritius | Mauritius | National Assembly | Unicameral | 07 Nov 2019 | 2019-11-07 00:00:00 | 21 Nov 2019 | - | - | - | - | |
| MX | Mexico | Mexico | Chamber of Deputies | Bicameral | Lower chamber | 01 Jul 2018 | 2018-07-01 00:00:00 | 01 Sep 2018 | 48.05 | 5.20 | 28.60 | 44.80 |
| MX | Mexico | Mexico | Senate | Bicameral | Upper chamber | 01 Jul 2018 | 2018-07-01 00:00:00 | 01 Sep 2018 | 54.1 | 1.96 | 14.71 | 29.41 |
| FM | Micronesia (Federated States of) | Micronesia (Federated States of) | Congress | Unicameral | 05 Mar 2019 | 2019-03-05 00:00:00 | 11 May 2019 | - | - | - | - | |
| MC | Monaco | Monaco | National Council | Unicameral | 11 Feb 2018 | 2018-02-11 00:00:00 | 22 Feb 2018 | - | 0.00 | 29.17 | 33.33 | |
| MN | Mongolia | Mongolia | State Great Hural | Unicameral | 24 Jun 2020 | 2020-06-24 00:00:00 | 30 Jun 2020 | - | - | - | - | |
| ME | Montenegro | Montenegro | Parliament | Unicameral | 30 Aug 2020 | 2020-08-30 00:00:00 | 23 Sep 2020 | 48.96 | 4.94 | 22.22 | 37.04 | |
| MA | Morocco | Morocco | House of Representatives | Bicameral | Lower chamber | 07 Oct 2016 | 2016-10-07 00:00:00 | 14 Oct 2016 | 52.86 | 2.03 | 12.91 | 24.56 |
| MA | Morocco | Morocco | House of Councillors | Bicameral | Upper chamber | 02 Oct 2015 | 2015-10-02 00:00:00 | - | - | - | - | - |
| MZ | Mozambique | Mozambique | Assembly of the Republic | Unicameral | 15 Oct 2019 | 2019-10-15 00:00:00 | 13 Jan 2020 | 51.17 | 1.20 | 22.00 | 33.20 | |
| MM | Myanmar | Myanmar | House of Representatives | Bicameral | Lower chamber | 08 Nov 2020 | 2020-11-08 00:00:00 | 01 Feb 2021 | - | 0.23 | 13.36 | 27.19 |
| MM | Myanmar | Myanmar | House of Nationalities | Bicameral | Upper chamber | 08 Nov 2020 | 2020-11-08 00:00:00 | 01 Feb 2021 | - | 0.00 | 21.43 | 32.59 |
| NA | Namibia | Namibia | National Assembly | Bicameral | Lower chamber | 27 Nov 2019 | 2019-11-27 00:00:00 | 20 Mar 2020 | - | - | - | - |
| NA | Namibia | Namibia | National Council | Bicameral | Upper chamber | 08 Dec 2015 | 2015-12-08 00:00:00 | 08 Dec 2015 | - | 0.00 | 3.85 | 23.08 |
| NR | Nauru | Nauru | Parliament | Unicameral | 24 Aug 2019 | 2019-08-24 00:00:00 | 27 Aug 2019 | - | - | - | - | |
| NP | Nepal | Nepal | House of Representatives | Bicameral | Lower chamber | 26 Nov 2017 - 07 Dec 2017 | 2017-11-26 00:00:00 | 05 Mar 2018 | - | 0.00 | 5.09 | 16.36 |
| NP | Nepal | Nepal | National Assembly | Bicameral | Upper chamber | 23 Jan 2020 | 2020-01-23 00:00:00 | - | - | 0.00 | 1.72 | 12.07 |
| NL | Netherlands | Netherlands | House of Representatives | Bicameral | Lower chamber | 15 Mar 2017 | 2017-03-15 00:00:00 | 29 Mar 2017 | - | 2.00 | 33.33 | 55.33 |
| NL | Netherlands | Netherlands | Senate | Bicameral | Upper chamber | 27 May 2019 | 2019-05-27 00:00:00 | 11 Jun 2019 | 57.13 | 1.33 | 9.33 | 12.00 |
| NZ | New Zealand | New Zealand | House of Representatives | Unicameral | 17 Oct 2020 | 2020-10-17 00:00:00 | 25 Nov 2020 | 47.38 | 4.17 | 27.50 | 40.83 | |
| NI | Nicaragua | Nicaragua | National Assembly | Unicameral | 06 Nov 2016 | 2016-11-06 00:00:00 | 09 Jan 2017 | 60.41 | 0.00 | 3.30 | 9.89 | |
| NE | Niger | Niger | National Assembly | Unicameral | 21 Feb 2016 - 22 Feb 2016 | 2016-02-21 00:00:00 | 25 Mar 2016 | - | 1.20 | 6.63 | 27.71 | |
| NG | Nigeria | Nigeria | House of Representatives | Bicameral | Lower chamber | 23 Feb 2019 | 2019-02-23 00:00:00 | 11 Jun 2019 | 55.7 | 0.00 | 7.50 | 25.56 |
| NG | Nigeria | Nigeria | Senate | Bicameral | Upper chamber | 23 Feb 2019 | 2019-02-23 00:00:00 | 11 Jun 2019 | - | - | - | - |
| MK | North Macedonia | North Macedonia | Assembly of the Republic | Unicameral | 15 Jul 2020 | 2020-07-15 00:00:00 | 04 Aug 2020 | - | 1.67 | 28.33 | 48.33 | |
| NO | Norway | Norway | Parliament | Unicameral | 11 Sep 2017 | 2017-09-11 00:00:00 | 02 Oct 2017 | 46.1 | 13.61 | 34.32 | 44.97 | |
| OM | Oman | Oman | Shura Council | Bicameral | Lower chamber | 27 Oct 2019 | 2019-10-27 00:00:00 | 03 Nov 2019 | 45 | 0.00 | 26.74 | 46.51 |
| OM | Oman | Oman | State Council | Bicameral | Upper chamber | 07 Nov 2019 | 2019-11-07 00:00:00 | - | 57 | 0.00 | 0.00 | 10.59 |
| PK | Pakistan | Pakistan | National Assembly | Bicameral | Lower chamber | 25 Jul 2018 | 2018-07-25 00:00:00 | 13 Aug 2018 | 51.89 | 2.08 | 13.69 | 31.25 |
| PK | Pakistan | Pakistan | Senate | Bicameral | Upper chamber | 03 Mar 2018 | 2018-03-03 00:00:00 | 12 Mar 2018 | - | - | - | - |
| PW | Palau | Palau | House of Delegates | Bicameral | Lower chamber | 03 Nov 2020 | 2020-11-03 00:00:00 | 21 Jan 2021 | - | - | - | - |
| PW | Palau | Palau | Senate | Bicameral | Upper chamber | 03 Nov 2020 | 2020-11-03 00:00:00 | 21 Jan 2021 | - | - | - | - |
| PA | Panama | Panama | National Assembly | Unicameral | 05 May 2019 | 2019-05-05 00:00:00 | 01 Jul 2019 | - | - | - | - | |
| PG | Papua New Guinea | Papua New Guinea | National Parliament | Unicameral | 24 Jun 2017 - 08 Jul 2017 | 2017-06-24 00:00:00 | 02 Aug 2017 | - | 0.00 | 9.21 | 19.74 | |
| PY | Paraguay | Paraguay | Chamber of Deputies | Bicameral | Lower chamber | 22 Apr 2018 | 2018-04-22 00:00:00 | 01 Jul 2018 | - | - | - | - |
| PY | Paraguay | Paraguay | Senate | Bicameral | Upper chamber | 22 Apr 2018 | 2018-04-22 00:00:00 | 01 Jul 2018 | - | - | - | - |
| PE | Peru | Peru | Congress of the Republic | Unicameral | 26 Jan 2020 | 2020-01-26 00:00:00 | 16 Mar 2020 | 48.28 | 4.62 | 26.15 | 45.38 | |
| PH | Philippines | Philippines | House of Representatives | Bicameral | Lower chamber | 13 May 2019 | 2019-05-13 00:00:00 | 22 Jul 2019 | - | - | - | - |
| PH | Philippines | Philippines | Senate | Bicameral | Upper chamber | 13 May 2019 | 2019-05-13 00:00:00 | 22 Jul 2019 | - | - | - | - |
| PL | Poland | Poland | Sejm | Bicameral | Lower chamber | 13 Oct 2019 | 2019-10-13 00:00:00 | 12 Nov 2019 | 50 | 4.35 | 22.39 | 36.96 |
| PL | Poland | Poland | Senate | Bicameral | Upper chamber | 13 Oct 2019 | 2019-10-13 00:00:00 | 12 Nov 2019 | 58.5 | 0.00 | 4.00 | 9.00 |
| PT | Portugal | Portugal | Assembly of the Republic | Unicameral | 06 Oct 2019 | 2019-10-06 00:00:00 | 25 Oct 2019 | 49 | 5.22 | 26.96 | 39.13 | |
| QA | Qatar | Qatar | Shura Council | Unicameral | 17 Jun 2016 | 2016-06-17 00:00:00 | 01 Nov 2016 | - | 0.00 | 0.00 | 7.32 | |
| KR | Republic of Korea | Republic of Korea | National Assembly | Unicameral | 15 Apr 2020 | 2020-04-15 00:00:00 | 30 May 2020 | 54.9 | 0.00 | 2.33 | 6.33 | |
| MD | Republic of Moldova | Republic of Moldova | Parliament | Unicameral | 24 Feb 2019 | 2019-02-24 00:00:00 | 21 Mar 2019 | 47.44 | 5.00 | 29.00 | 48.00 | |
| RO | Romania | Romania | Chamber of Deputies | Bicameral | Lower chamber | 11 Dec 2016 | 2016-12-11 00:00:00 | 21 Dec 2016 | - | 6.38 | 35.26 | 51.67 |
| RO | Romania | Romania | Senate | Bicameral | Upper chamber | 11 Dec 2016 | 2016-12-11 00:00:00 | 21 Dec 2016 | - | 0.00 | 11.03 | 34.56 |
| RU | Russian Federation | Russian Federation | State Duma | Bicameral | Lower chamber | 18 Sep 2016 | 2016-09-18 00:00:00 | 05 Oct 2016 | - | - | - | - |
| RU | Russian Federation | Russian Federation | Council of the Federation | Bicameral | Upper chamber | - | - | 57.85 | 0.00 | 2.96 | 10.65 | |
| RW | Rwanda | Rwanda | Chamber of Deputies | Bicameral | Lower chamber | 03 Sep 2018 | 2018-09-03 00:00:00 | 05 Oct 2018 | 46.81 | 2.50 | 18.75 | 46.25 |
| RW | Rwanda | Rwanda | Senate | Bicameral | Upper chamber | 16 Sep 2019 - 18 Sep 2019 | 2019-09-16 00:00:00 | 17 Oct 2019 | - | - | - | - |
| KN | Saint Kitts and Nevis | Saint Kitts and Nevis | National Assembly | Unicameral | 05 Jun 2020 | 2020-06-05 00:00:00 | 08 Jul 2020 | - | 0.00 | 25.00 | 25.00 | |
| LC | Saint Lucia | Saint Lucia | House of Assembly | Bicameral | Lower chamber | 06 Jun 2016 | 2016-06-06 00:00:00 | 12 Jul 2016 | - | - | - | - |
| LC | Saint Lucia | Saint Lucia | Senate | Bicameral | Upper chamber | 12 Jul 2016 | 2016-07-12 00:00:00 | 12 Jul 2016 | - | - | - | - |
| VC | Saint Vincent and the Grenadines | Saint Vincent and the Grenadines | House of Assembly | Unicameral | 05 Nov 2020 | 2020-11-05 00:00:00 | 30 Nov 2020 | - | - | - | - | |
| WS | Samoa | Samoa | Legislative Assembly | Unicameral | 04 Mar 2016 | 2016-03-04 00:00:00 | 16 Mar 2016 | - | - | - | - | |
| SM | San Marino | San Marino | Great and General Council | Unicameral | 08 Dec 2019 | 2019-12-08 00:00:00 | 23 Dec 2019 | 46.9 | 11.67 | 26.67 | 48.33 | |
| ST | Sao Tome and Principe | Sao Tome and Principe | National Assembly | Unicameral | 07 Oct 2018 | 2018-10-07 00:00:00 | 22 Nov 2018 | - | 0.00 | 21.82 | 36.36 | |
| SA | Saudi Arabia | Saudi Arabia | Shura Council | Unicameral | 20 Oct 2020 | 2020-10-20 00:00:00 | - | - | - | - | - | |
| SN | Senegal | Senegal | National Assembly | Unicameral | 30 Jul 2017 | 2017-07-30 00:00:00 | 14 Sep 2017 | - | 0.00 | 11.04 | 18.40 | |
| RS | Serbia | Serbia | National Assembly | Unicameral | 21 Jun 2020 | 2020-06-21 00:00:00 | 03 Aug 2020 | 45.07 | 12.80 | 40.40 | 56.40 | |
| SC | Seychelles | Seychelles | National Assembly | Unicameral | 22 Oct 2020 - 24 Oct 2020 | 2020-10-22 00:00:00 | 28 Oct 2020 | - | - | - | - | |
| SL | Sierra Leone | Sierra Leone | Parliament | Unicameral | 07 Mar 2018 | 2018-03-07 00:00:00 | 25 Apr 2018 | - | - | - | - | |
| SG | Singapore | Singapore | Parliament | Unicameral | 10 Jul 2020 | 2020-07-10 00:00:00 | 24 Aug 2020 | 48.3 | 1.05 | 15.79 | 40.00 | |
| SK | Slovakia | Slovakia | National Council | Unicameral | 29 Feb 2020 | 2020-02-29 00:00:00 | 20 Mar 2020 | 47.51 | 5.41 | 29.05 | 52.03 | |
| SI | Slovenia | Slovenia | National Assembly | Bicameral | Lower chamber | 03 Jun 2018 | 2018-06-03 00:00:00 | 22 Jun 2018 | 49.83 | 4.44 | 17.78 | 32.22 |
| SI | Slovenia | Slovenia | National Council | Bicameral | Upper chamber | 22 Nov 2017 - 23 Nov 2017 | 2017-11-22 00:00:00 | 12 Dec 2017 | - | - | - | - |
| SB | Solomon Islands | Solomon Islands | National Parliament | Unicameral | 03 Apr 2019 | 2019-04-03 00:00:00 | 24 Apr 2019 | 51.2 | 0.00 | 10.00 | 16.00 | |
| SO | Somalia | Somalia | House of the People | Bicameral | Lower chamber | 23 Oct 2016 - 07 Feb 2017 | 2016-10-23 00:00:00 | 27 Dec 2016 | - | - | - | - |
| SO | Somalia | Somalia | Upper House | Bicameral | Upper chamber | 23 Oct 2016 - 07 Feb 2017 | 2016-10-23 00:00:00 | - | - | 3.70 | 20.37 | 29.63 |
| ZA | South Africa | South Africa | National Assembly | Bicameral | Lower chamber | 08 May 2019 | 2019-05-08 00:00:00 | 22 May 2019 | - | 4.71 | 24.12 | 35.29 |
| ZA | South Africa | South Africa | National Council of Provinces | Bicameral | Upper chamber | 23 May 2019 | 2019-05-23 00:00:00 | - | - | 1.89 | 15.09 | 22.64 |
| SS | South Sudan | South Sudan | Transitional National Legislative Assembly | Bicameral | Lower chamber | 04 Aug 2016 | 2016-08-04 00:00:00 | 04 Aug 2016 | - | - | - | - |
| SS | South Sudan | South Sudan | Council of States | Bicameral | Upper chamber | 05 Aug 2011 | 2011-08-05 00:00:00 | 05 Aug 2011 | - | - | - | - |
| ES | Spain | Spain | Congress of Deputies | Bicameral | Lower chamber | 10 Nov 2019 | 2019-11-10 00:00:00 | 03 Dec 2019 | 47 | 3.43 | 22.86 | 40.86 |
| ES | Spain | Spain | Senate | Bicameral | Upper chamber | 10 Nov 2019 | 2019-11-10 00:00:00 | 03 Dec 2019 | 52.7 | 1.89 | 11.36 | 22.35 |
| LK | Sri Lanka | Sri Lanka | Parliament | Unicameral | 05 Aug 2020 | 2020-08-05 00:00:00 | 20 Aug 2020 | - | - | - | - | |
| SR | Suriname | Suriname | National Assembly | Unicameral | 25 May 2020 | 2020-05-25 00:00:00 | 29 Jun 2020 | 45.75 | 9.80 | 37.25 | 52.94 | |
| SE | Sweden | Sweden | Parliament | Unicameral | 09 Sep 2018 | 2018-09-09 00:00:00 | 24 Sep 2018 | 44.99 | 9.42 | 31.41 | 46.07 | |
| CH | Switzerland | Switzerland | National Council | Bicameral | Lower chamber | 20 Oct 2019 | 2019-10-20 00:00:00 | 02 Dec 2019 | 48.6 | 4.00 | 25.50 | 39.50 |
| CH | Switzerland | Switzerland | Council of States | Bicameral | Upper chamber | 20 Oct 2019 - 24 Nov 2019 | 2019-10-20 00:00:00 | 02 Dec 2019 | 54.07 | 0.00 | 13.04 | 17.39 |
| SY | Syrian Arab Republic | Syrian Arab Republic | People's Assembly | Unicameral | 19 Jul 2020 | 2020-07-19 00:00:00 | 10 Aug 2020 | - | - | - | - | |
| TJ | Tajikistan | Tajikistan | House of Representatives | Bicameral | Lower chamber | 01 Mar 2020 | 2020-03-01 00:00:00 | 17 Mar 2020 | - | - | - | - |
| TJ | Tajikistan | Tajikistan | National Assembly | Bicameral | Upper chamber | 27 Mar 2020 | 2020-03-27 00:00:00 | 17 Apr 2020 | - | - | - | - |
| TH | Thailand | Thailand | House of Representatives | Bicameral | Lower chamber | 24 Mar 2019 | 2019-03-24 00:00:00 | 24 May 2019 | 54 | 2.40 | 16.60 | 26.40 |
| TH | Thailand | Thailand | Senate | Bicameral | Upper chamber | 14 May 2019 | 2019-05-14 00:00:00 | 24 May 2019 | 64.92 | 0.00 | 0.00 | 1.20 |
| TL | Timor-Leste | Timor-Leste | National Parliament | Unicameral | 12 May 2018 | 2018-05-12 00:00:00 | 13 Jun 2018 | 40.44 | - | - | - | |
| TG | Togo | Togo | National Assembly | Unicameral | 20 Dec 2018 | 2018-12-20 00:00:00 | 08 Jan 2019 | - | - | - | - | |
| TO | Tonga | Tonga | Legislative Assembly | Unicameral | 16 Nov 2017 | 2017-11-16 00:00:00 | 18 Dec 2017 | - | - | - | - | |
| TT | Trinidad and Tobago | Trinidad and Tobago | House of Representatives | Bicameral | Lower chamber | 10 Aug 2020 | 2020-08-10 00:00:00 | 28 Aug 2020 | 57.76 | 0.00 | 7.14 | 21.43 |
| TT | Trinidad and Tobago | Trinidad and Tobago | Senate | Bicameral | Upper chamber | 28 Aug 2020 | 2020-08-28 00:00:00 | 28 Aug 2020 | 52.63 | 3.33 | 23.33 | 30.00 |
| TN | Tunisia | Tunisia | Assembly of People's Representatives | Unicameral | 06 Oct 2019 | 2019-10-06 00:00:00 | 13 Nov 2019 | 48.08 | 6.91 | 26.73 | 39.63 | |
| TR | Turkey | Turkey | Grand National Assembly of Turkey | Unicameral | 24 Jun 2018 | 2018-06-24 00:00:00 | 07 Jul 2018 | 52.83 | 1.33 | 14.83 | 28.67 | |
| TM | Turkmenistan | Turkmenistan | Assembly | Unicameral | 25 Mar 2018 | 2018-03-25 00:00:00 | 30 Mar 2018 | 46.16 | 1.60 | 35.20 | 63.20 | |
| TV | Tuvalu | Tuvalu | Parliament of Tuvalu | Unicameral | 09 Sep 2019 | 2019-09-09 00:00:00 | 19 Sep 2019 | - | - | - | - | |
| UG | Uganda | Uganda | Parliament | Unicameral | 18 Feb 2016 | 2016-02-18 00:00:00 | 17 May 2016 | - | - | - | - | |
| UA | Ukraine | Ukraine | Parliament | Unicameral | 21 Jul 2019 | 2019-07-21 00:00:00 | 29 Aug 2019 | - | 7.09 | 46.34 | 63.36 | |
| AE | United Arab Emirates | United Arab Emirates | Federal National Council | Unicameral | 05 Oct 2019 | 2019-10-05 00:00:00 | 14 Nov 2019 | 48.5 | 2.50 | 25.00 | 40.00 | |
| GB | United Kingdom | United Kingdom | House of Commons | Bicameral | Lower chamber | 12 Dec 2019 | 2019-12-12 00:00:00 | 17 Dec 2019 | 51 | 3.69 | 21.69 | 34.00 |
| GB | United Kingdom | United Kingdom | House of Lords | Bicameral | Upper chamber | - | - | 70 | 0.00 | 0.64 | 1.91 | |
| TZ | United Republic of Tanzania | United Republic of Tanzania | National Assembly | Unicameral | 28 Oct 2020 | 2020-10-28 00:00:00 | 10 Nov 2020 | - | 0.62 | 10.84 | 24.15 | |
| US | United States of America | United States of America | House of Representatives | Bicameral | Lower chamber | 03 Nov 2020 | 2020-11-03 00:00:00 | 03 Jan 2021 | - | 0.46 | 11.52 | 20.74 |
| US | United States of America | United States of America | Senate | Bicameral | Upper chamber | 03 Nov 2020 | 2020-11-03 00:00:00 | 03 Jan 2021 | - | 0.00 | 1.00 | 5.00 |
| UY | Uruguay | Uruguay | House of Representatives | Bicameral | Lower chamber | 27 Oct 2019 | 2019-10-27 00:00:00 | 15 Feb 2020 | 48.68 | 1.01 | 31.31 | 36.36 |
| UY | Uruguay | Uruguay | Senate | Bicameral | Upper chamber | 27 Oct 2019 | 2019-10-27 00:00:00 | 15 Feb 2020 | 61.23 | 0.00 | 3.33 | 10.00 |
| UZ | Uzbekistan | Uzbekistan | Legislative Chamber | Bicameral | Lower chamber | 22 Dec 2019 - 05 Jan 2020 | 2019-12-22 00:00:00 | 20 Jan 2020 | - | - | - | - |
| UZ | Uzbekistan | Uzbekistan | Senate | Bicameral | Upper chamber | 16 Jan 2020 - 17 Jan 2020 | 2020-01-16 00:00:00 | 21 Jan 2020 | - | - | - | - |
| VU | Vanuatu | Vanuatu | Parliament | Unicameral | 19 Mar 2020 | 2020-03-19 00:00:00 | 20 Apr 2020 | - | - | - | - | |
| VE | Venezuela (Bolivarian Republic of) | Venezuela (Bolivarian Republic of) | National Assembly | Unicameral | 06 Dec 2015 | 2015-12-06 00:00:00 | 05 Jan 2016 | - | 9.82 | 27.61 | 40.49 | |
| VN | Viet Nam | Viet Nam | National Assembly | Unicameral | 22 May 2016 | 2016-05-22 00:00:00 | 20 Jul 2016 | - | 1.81 | 12.30 | 22.18 | |
| YE | Yemen | Yemen | House of Representatives | Bicameral | Lower chamber | 27 Apr 2003 | 2003-04-27 00:00:00 | 10 May 2003 | - | 0.00 | 0.33 | 3.99 |
| YE | Yemen | Yemen | Consultative Council | Bicameral | Upper chamber | 28 Apr 2001 | 2001-04-28 00:00:00 | 28 Apr 2001 | - | - | - | - |
| ZM | Zambia | Zambia | National Assembly | Unicameral | 11 Aug 2016 | 2016-08-11 00:00:00 | 23 Sep 2016 | - | 1.22 | 12.80 | 35.98 | |
| ZW | Zimbabwe | Zimbabwe | National Assembly | Bicameral | Lower chamber | 30 Jul 2018 | 2018-07-30 00:00:00 | - | - | - | - | - |
| ZW | Zimbabwe | Zimbabwe | Senate | Bicameral | Upper chamber | 30 Jul 2018 | 2018-07-30 00:00:00 | - | - | - | - | - |
Notes:
- The data in this table has been compiled by the Inter-Parliamentary Union on the basis of information provided by parliaments.
- Since 2019, data on the age of parliamentarians is collected at start of the legislature, following the most recent elections or renewal of indirectly elected and appointed chambers/parliaments.
- This data is not updated during the legislature.
- The data before 2019 were collected for the Youth participation in national parliaments, published in 2014 and 2018.