Jumlah partai efektif
Jumlah partai efektif menurut negara

Untuk masing-masing negara, nilai jumlah partai parlementer efektif (ENPP) untuk pemilihan umum terakhir yang tersedia ditampilkan. 
Beberapa jumlah partai efektif tertinggi ada di Brasil, Belgia, dan Bosnia dan Herzegovina. Parlemen Eropa memiliki jumlah partai efektif yang lebih tinggi lagi jika partai-partai nasional diperhitungkan, tetapi jumlah partai efektif yang jauh lebih rendah jika kelompok-kelompok politik di Parlemen Eropa diperhitungkan.
| Negara | Tahun | Jumlah partai efektif |
| --- | --- | --- |
| Albania | 2021 | 2.18 |
| Andorra | 2019 | 2.99 |
| Antigua and Barbuda | 2018 | 1.27 |
| Argentina | 2021 | 2.57 |
| Armenia | 2021 | 1.93 |
| Australia | 2022 | 3.15 |
| Austria | 2019 | 3.94 |
| Bahamas | 2021 | 1.42 |
| Barbados | 2022 | 1.00 |
| Belgium | 2019 | 9.70 |
| Belize | 2020 | 1.37 |
| Bermuda | 2020 | 1.38 |
| Bhutan | 2018 | 1.86 |
| Bolivia | 2020 | 2.28 |
| Bosnia and Herzegovina | 2022 | 9.00 |
| Botswana | 2019 | 1.94 |
| Brazil | 2022 | 9.91 |
| Bulgaria | 2022 | 5.49 |
| Burkina Faso | 2020 | 4.11 |
| Cabo Verde | 2021 | 2.20 |
| Canada | 2021 | 2.76 |
| Chile | 2021 | 4.13 |
| Colombia | 2022 | 8.74 |
| Costa Rica | 2018 | 4.73 |
| Croatia | 2020 | 3.19 |
| Cyprus | 2021 | 4.81 |
| Czechia | 2021 | 3.34 |
| Denmark | 2022 | 7.24 |
| Dominican Republic | 2020 | 2.75 |
| El Salvador | 2021 | 2.99 |
| Estonia | 2019 | 4.19 |
| Templat:Country data Faeroe Islands | 2019 | 5.26 |
| Fiji | 2022 | 2.63 |
| Finland | 2019 | 6.36 |
| France | 2022 | 3.72 |
| Gambia | 2022 | 4.80 |
| Georgia | 2020 | 2.37 |
| Germany | 2021 | 5.51 |
| Ghana | 2020 | 2.01 |
| Greece | 2019 | 2.71 |
| Greenland | 2021 | 3.52 |
| Grenada | 2022 | 1.92 |
| Guatemala | 2019 | 6.73 |
| Guinea | 2020 | 2.06 |
| Guinea-Bissau | 2019 | 3.05 |
| Guyana | 2020 | 2.06 |
| Honduras | 2021 | 3.16 |
| Hungary | 2022 | 1.84 |
| Iceland | 2021 | 6.29 |
| India | 2019 | 2.17 |
| Indonesia | 2019 | 7.47 |
| Iraq | 2010 | 4.35 |
| Ireland | 2020 | 5.98 |
| Israel | 2022 | 6.51 |
| Italy | 2022 | 2.40 |
| Jamaica | 2020 | 1.53 |
| Japan | 2021 | 2.69 |
| Kosovo | 2021 | 3.49 |
| Kenya | 2013 | 5.16 |
| Kyrgyzstan | 2015 | 4.82 |
| Latvia | 2022 | 6.14 |
| Lesotho | 2022 | 3.93 |
| Liberia | 2017 | 5.81 |
| Liechtenstein | 2021 | 2.93 |
| Lithuania | 2020 | 4.84 |
| Luxembourg | 2018 | 4.56 |
| Malaysia | 2022 | 7.72 |
| Malawi | 2019 | 5.19 |
| Malta | 2022 | 1.97 |
| Mauritius | 2019 | 2.29 |
| Mexico | 2021 | 2.21 |
| Moldova | 2021 | 2.03 |
| Monaco | 2018 | 1.29 |
| Montenegro | 2020 | 3.71 |
| Morocco | 2021 | 5.68 |
| Mozambique | 2019 | 1.57 |
| Namibia | 2019 | 2.16 |
| Nepal | 2022 | 4.75 |
| Netherlands | 2021 | 8.54 |
| New Zealand | 2020 | 2.61 |
| Nicaragua | 2016 | 1.59 |
| Niger | 2020 | 3.85 |
| North Macedonia | 2020 | 3.25 |
| Northern Cyprus | 2022 | 2.71 |
| Northern Ireland | 2022 | 4.52 |
| Norway | 2021 | 5.56 |
| Palestine | 2006 | 2.32 |
| Panama | 2019 | 3.07 |
| Paraguay | 2018 | 2.86 |
| Peru | 2021 | 6.20 |
| Poland | 2019 | 2.76 |
| Portugal | 2022 | 2.66 |
| Romania | 2020 | 4.30 |
| Saint Kitts and Nevis | 2022 | 2.5 |
| Saint Lucia | 2021 | 1.65 |
| Saint Vincent and the Grenadines | 2020 | 1.92 |
| San Marino | 2019 | 4.63 |
| Sao Tome and Principe | 2022 | 2.41 |
| Scotland | 2021 | 2.96 |
| Senegal | 2022 | 2.61 |
| Serbia | 2022 | 3.58 |
| Seychelles | 2020 | 1.69 |
| Sierra Leone | 2018 | 2.45 |
| Singapore | 2020 | 1.24 |
| Slovakia | 2020 | 4.37 |
| Slovenia | 2022 | 3.04 |
| South Africa | 2019 | 2.57 |
| South Korea | 2020 | 2.09 |
| Spain | 2019 | 4.68 |
| Sri Lanka | 2020 | 2.10 |
| Suriname | 2020 | 3.53 |
| Sweden | 2022 | 5.18 |
| Switzerland | 2019 | 6.47 |
| Taiwan | 2020 | 2.45 |
| Tanzania | 2015 | 1.75 |
| Thailand | 2019 | 5.64 |
| Timor-Leste | 2018 | 2.46 |
| Togo | 2013 | 1.95 |
| Trinidad and Tobago | 2020 | 1.99 |
| Tunisia | 2014 | 3.69 |
| Turkey | 2018 | 2.27 |
| Uganda | 2021 | 2.34 |
| Ukraine | 2019 | 2.64 |
| United Kingdom | 2019 | 2.39 |
| United States | 2020 | 2.00 |
| Uruguay | 2019 | 3.31 |
| Venezuela | 2020 | 1.17 |
| Wales | 2021 | 2.71 |
| Zambia | 2021 | 2.35 |