| Country | Party | Region / constituency / goal | Electoral results | EU party |
 Austria | Team Carinthia |  Carinthia | Carinthia 2023: 10.1% | none |
| Austria | Citizens' Forum Tyrol |  Tyrol | Tyrol 2022: 9.9% | none |
 Belgium | New Flemish Alliance |  Flanders | Belgium 2024: 16.7%
Flanders 2024: 23.9% | EFA |
| Belgium | Flemish Interest | Flanders | Belgium 2024: 13.8%
Flanders 2024: 22.7% | none |
| Belgium | Democratic Federalist Independent |  Brussels | Brussels 2024: 8.1% | none |
 Bosnia and Herzegovina | Alliance of Independent Social Democrats |  ethnic Serbs | Bosnia–Herzegovina 2022: 16.3%
Republika Srpska 2022: 34.6% | none |
| Bosnia and Herzegovina | Serb Democratic Party | ethnic Serbs | Bosnia–Herzegovina 2022: 7.1%
Republika Srpska 2022: 15.0% | none |
| Bosnia and Herzegovina | Party of Democratic Progress | ethnic Serbs | Bosnia–Herzegovina 2022: 4.6%
Republika Srpska 2022: 10.3% | EPP† |
| Bosnia and Herzegovina |
For Justice and Order |
ethnic Serbs |
Bosnia–Herzegovinaa 2022: 2.1%
Republika Srpska 2022: 4.9% |
none |
| Bosnia and Herzegovina |
United Srpska |
ethnic Serbs |
Bosnia–Herzegovina 2022: 1.6%
Republika Srpska 2022: 5.1% |
none |
| Bosnia and Herzegovina | Socialist Party | ethnic Serbs | Bosnia–Herzegovina 2022: 1.5%
Republika Srpska 2022: 5.9% | none |
| Bosnia and Herzegovina | Democratic People's Alliance | ethnic Serbs | Bosnia–Herzegovina 2022: 1.4%
Republika Srpska 2022: 4.5% | none |
| Bosnia and Herzegovina |
State Movement |
 ethnic Bosniaks |
Republika Srpska 2022: 5.7% |
none |
| Bosnia and Herzegovina |
Democratic Union |
ethnic Serbs |
Republika Srpska 2022: 5.5% |
none |
| Bosnia and Herzegovina |
People's Party of Srpska |
ethnic Serbs |
Republika Srpska 2022: 3.3% |
none |
| Bosnia and Herzegovina |
Socialist Party of Srpska |
ethnic Serbs |
Republika Srpska 2022: 3.1% |
none |
| Bosnia and Herzegovina | Party of Democratic Action | ethnic Bosniaks | Bosnia–Herzegovina 2022: 17.2%
BH Federation 2022: 24.4% | EPP† |
| Bosnia and Herzegovina | People and Justice | ethnic Bosniaks | Bosnia–Herzegovina 2022: 5.0%
BH Federation 2022: 6.9% | none |
| Bosnia and Herzegovina | People's European Union of Bosnia and Herzegovina | ethnic Bosniaks | Bosnia–Herzegovina 2022: 3.0%
BH Federation 2022: 4.3% | none |
| Bosnia and Herzegovina | Party for Bosnia and Herzegovina | ethnic Bosniaks | Bosnia–Herzegovina 2022: 1.7%
BH Federation 2022: 3.7% | none |
| Bosnia and Herzegovina | Croatian Democratic Union |  ethnic Croats | Bosnia–Herzegovina 2022: 8.8%
BH Federation 2022: 14.4% | EPP† |
 Bulgaria | Movement for Rights and Freedoms |  ethnic Turks | Bulgaria 2024: 11.2% | ALDE |
| Bulgaria | Alliance for Rights and Freedoms | ethnic Turks | Bulgaria 2024: 7.2% | none |
| Croatia | Istrian Democratic Assembly |  Istria | Istria 2025: 30.4% | ALDE |
| Croatia | Croatian Democratic Alliance of Slavonia and Baranja |  Slavonia,  Baranja | Osijek-Baranja 2025: 6.4% | none |
| Croatia | Independent Democratic Serb Party |  ethnic Serbs | Vukovar-Syrmia 2025: 9.2% | none |
 Finland | Swedish People's Party of Finland |  ethnic Swedes | Finland 2023: 4.3%
Vaasa 2023: 19.3% | ALDE |
 France | Our Land |  Alsace | Grand Est 2021: 3.7% | EFA |
| France | EELV–Breton Democratic Union |  Brittany | Brittany 2021: 14.8% | EFA |
| France | Let's Make Corsica |  Corsica | Corsica 2021: 29.2% | EFA |
| France | Party of the Corsican Nation | Corsica | Corsica 2021: 13.2% | EFA |
| France | Renewal | Corsica | Corsica 2021: 8.4% | none |
| France | Free Corsica | Corsica | Corsica 2021: 6.9% | none |
 Germany | Christian Social Union in Bavaria |  Bavaria | Germany 2025: 6.0%
Bavaria 2023: 37.0% | EPP |
| Germany | Free Voters of Bavaria | Bavaria | Bavaria 2023: 15.8% | none |
| Germany | Free Voters of Hessen |  Hesse | Hessen 2023: 3.5% | none |
| Germany | Free Voters of Rhineland-Palatinate |  Rhineland-Palatinate | Rhineland-Palatinate 2026: 4.2% | none |
| Germany | South Schleswig Voters' Association |  ethnic Danes,  Frisians | Schleswig-Holstein 2022: 5.7% | EFA |
 Italy | Valdostan Union |  Aosta Valley | Aosta Valley 2025: 32.0% | EFA |
| Italy | Autonomists of the Centre (SA–PlA–RV) | Aosta Valley | Aosta Valley 2025: 14.1% | none |
| Italy | Lega Vallée d'Aoste | Aosta Valley | Aosta Valley 2025: 8.4% | none |
| Italy | Future Aosta Valley | Aosta Valley | Aosta Valley 2025: 4.6% | none |
| Italy | South Tyrolean People's Party |  South Tyrol | South Tyrol 2023: 34.5% | EPP† |
| Italy | Team K | South Tyrol | South Tyrol 2023: 11.1% | ALDE† |
| Italy | South Tyrolean Freedom | South Tyrol | South Tyrol 2023: 10.9% | EFA |
| Italy | Greens of South Tyrol | South Tyrol | South Tyrol 2023: 9.1% | EGP |
| Italy | JWA List | South Tyrol | South Tyrol 2023: 5.9% | none |
| Italy | Die Freiheitlichen | South Tyrol | South Tyrol 2023: 4.9% | none |
| Italy | For South Tyrol | South Tyrol | South Tyrol 2023: 3.4% | none |
| Italy | Lega Alto Adige Südtirol | South Tyrol | South Tyrol 2023: 3.0% | none |
| Italy | The Civic List | South Tyrol | South Tyrol 2023: 2.6% | none |
| Italy | Lega Trentino |  Trentino | Trentino 2023: 23.8%[a] | none |
| Italy | Campobase | Trentino | Trentino 2023: 8.4% | none |
| Italy | Trentino Tyrolean Autonomist Party | Trentino | Trentino 2023: 8.2% | EPP† |
| Italy | The Civic List | Trentino | Trentino 2023: 4.8% | none |
| Italy | Autonomy House | Trentino | Trentino 2023: 4.8% | none |
| Italy | Lega Piemonte |  Piedmont | Piedmont 2024: 9.4% | none |
| Italy | Lega Lombarda |  Lombardy | Lombardy 2023: 22.7%[b] | none |
| Italy | Liga Veneta |  Veneto | Veneto 2025: 36.3% | none |
| Italy | Resist Veneto | Veneto | Veneto 2025: 5.0% | none |
| Italy | Lega Friuli-Venezia Giulia |  Friuli-Venezia Giulia | Friuli-Venezia Giulia 2023: 36.8%[c] | none |
| Italy | Pact for Autonomy | Friuli-Venezia Giulia | Friuli-Venezia Giulia 2023: 6.3% | none |
| Italy | Lega Emilia
Lega Romagna |  Emilia
 Romagna | Emilia-Romagna 2024: 5.3% | none
none |
| Italy | Lega Liguria |  Liguria | Liguria 2024: 8.5% | none |
| Italy | Lega Toscana |  Tuscany | Tuscany 2025: 4.4% | none |
| Italy | Lega Marche |  Marche | Marche 2025: 7.4% | none |
| Italy | Lega Umbria |  Umbria | Umbria 2024: 12.7%[d] | none |
| Italy | Sardinian Reformers |  Sardinia | Sardinia 2024: 7.1% | none |
| Italy | Sardinia in the Centre 2020 | Sardinia | Sardinia 2024: 5.5% | none |
| Italy | Sardinian Action Party | Sardinia | Sardinia 2024: 5.4% | EFA |
| Italy | Sardinia Alliance | Sardinia | Sardinia 2024: 4.1% | none |
| Italy | Lega Sardegna | Sardinia | Sardinia 2024: 3.8% | none |
| Italy | Sardinia Project | Sardinia | Sardinia 2024: 3.5% | none |
| Italy | Shared Horizon | Sardinia | Sardinia 2024: 3.0% | none |
| Italy | Progressive Party | Sardinia | Sardinia 2024: 3.0% | none |
| Italy | Future Left | Sardinia | Sardinia 2024: 3.0% | none |
| Italy | South calls North |  Sicily | Sicily 2022: 13.6% | none |
| Italy | Popular Construction–Movement for Autonomy | Sicily | Sicily 2022: 6.8% | none |
 Latvia | Latvian Russian Union |  ethnic Russians | Latvia 2022: 3.7% | none |
 Lithuania | Electoral Action of Poles in Lithuania |  ethic Poles | Lithuania 2024: 4.0% | ECRP |
 Montenegro | For the Future of Montenegro (incl. NSD, DNP, RP) | ethnic Serbs | Montenegro 2023: 14.8% | none |
| Montenegro | Bosniak Party | ethnic Bosniaks | Montenegro 2023: 7.1% | none |
| Montenegro | Socialist People's Party of Montenegro–Demos | ethnic Serbs | Montenegro 2023: 3.1% | none |
 Netherlands | Frisian National Party |  Friesland, Frisians | Friesland 2023: 8.1% | EFA |
| Netherlands | Groninger Interest |  Groningen | Groningen 2023: 6.0% | none |
| Netherlands | Party for the North | Groningen | Groningen 2023: 2.9% | none |
| Netherlands | Local Limburg |  Limburg | Limburg 2023: 4.3% | none |
| Netherlands | Local Brabant |  North Brabant | North Brabant 2023: 4.2% | none |
| Netherlands | Party for Zeeland |  Zeeland | Zeeland 2023: 4.6% | none |
 North Macedonia | European Front |  ethnic Albanians | North Macedonia 2024: 14.1% | none |
| North Macedonia | VLEN Coalition | ethnic Albanians | North Macedonia 2024: 10.9% | none |
| Poland | Nonpartisan Local Government Activists | Regionalism
 Lower Silesia | Poland 2024: 3.0%
Lower Silesia 2024: 10.6%
Pomerania 2024: 3.1%
Greater Poland 2024: 3.0% | none |
| Poland | All-Poland Local Government Coalition | Regionalism | West Pomerania 2024: 8.4%
Greater Poland 2024: 4.3% | none |
| Poland | German Minority Electoral Committee |  Silesia, ethnic Germans | Opole 2024: 16.2% | none |
| Poland | Silesian Regional Party | Silesia, ethnic Germans | Silesia 2024: 3.2% | EFA |
| Poland | Self-governed Pomerania |  Pomerania | Pomerania 2024: 3.8% | none |
 Romania | Democratic Alliance of Hungarians in Romania |  ethnic Hungarians | Romania 2024: 6.3%
Harghita 2024: 74.7% | EPP |
| Romania | Hungarian Alliance of Transylvania | ethnic Hungarians | Harghita 2024: 7.3% | EFA |
| Romania | Democratic Forum of Germans in Romania | ethnic Germans | Sibiu 2024: 12.4% | none |
 Serbia | Alliance of Vojvodina Hungarians | ethnic Hungarians | Vojvodina 2023: 6.7% | EPP† |
 Slovakia | Alliance | ethnic Hungarians | Slovakia 2023: 4.4%
Nitra 2023: 13.9% | EPP |
 Spain | Aragonese Union |  Aragon | Aragon 2026: 9.7% | EFA |
| Spain | Existe Coalition | Aragon | Aragon 2026: 3.5% | none |
| Spain | Asturias Forum |  Asturias | Asturias 2023: 3.7% | none |
| Spain | More for Majorca (incl. PSM) |  Balearic Islands,  Catalan Countries | Balearic Islands 2023: 8.4% | EFA |
| Spain | Proposal for the Islands | Balearic Islands, Catalan Countries | Balearic Islands 2023: 3.8% | none |
| Spain | Basque Nationalist Party |  Basque Country | Basque Country 2024: 35.2% | EDP |
| Spain | EH Bildu (incl. Sortu, EA, Alternatiba) | Basque Country | Basque Country 2024: 32.5% | EFA |
| Spain | Navarrese People's Union |  Navarre | Navarre 2023: 27.9% | EFA |
| Spain | EH Bildu (incl. Sortu, EA, Alternatiba) | Basque Country | Navarre 2023: 17.3% | EFA |
| Spain | Yes to the Future (incl. PNV) | Basque Country | Navarre 2023: 13.3% | EDP |
| Spain | Canarian Coalition |  Canary Islands | Canary Islands 2023: 21.8% | none |
| Spain | New Canaries | Canary Islands | Canary Islands 2023: 8.1% | EFA† |
| Spain | Regionalist Party of Cantabria |  Cantabria | Cantabria 2023: 20.9% | none |
| Spain | Leonese People's Union |  Castile and León | Castile and León 2026: 4.4% | none |
| Spain | Together for Catalonia |  Catalonia, Catalan Countries | Catalonia 2024: 21.6% | none |
| Spain | Republican Left of Catalonia | Catalonia, Catalan Countries | Catalonia 2024: 13.7% | EFA |
| Spain | Comuns Sumar (incl. EV) | Catalonia, Catalan Countries | Catalonia 2024: 5.8% | EGP (EV) |
| Spain | Popular Unity Candidacy | Catalonia, Catalan Countries | Catalonia 2024: 4.1% | none |
| Spain | Galician Nationalist Bloc |  Galicia | Galicia 2024: 31.6% | EFA |
| Spain |
More Madrid |  Madrid | Madrid 2023: 18.4% |
none |
| Spain | Riojan Party |  La Rioja | La Rioja 2023: 3.6% | none |
| Spain | Commitment Coalition (incl. BNV) |  Valencian Country, Catalan Countries | Valencian Community 2023: 14.5% | EFA |
 Switzerland | Geneva Citizens' Movement |  Geneva | Geneva 2023: 11.1% | none |
| Switzerland | Ticino League |  Ticino | Ticino 2023: 22.9% | none |
| Turkey | Peoples' Equality and Democracy Party |  ethnic Kurds | Turkey 2023: 8.9% | PES† |
 Ukraine | Kernes Bloc — Successful Kharkiv |  Kharkiv Oblast | Kharkiv 2020: 38.3% | none |
| Ukraine | All-Ukrainian Union "Cherkashchany" |  Cherkasy Oblast | Cherkasy 2020: 21.4% | none |
| Ukraine | Native Zakarpattia |  Zakarpattia Oblast | Zakarpattia 2020: 17.8% | none |
| Ukraine | Party of Hungarians of Ukraine | ethnic Hungarians | Zakarpattia 2020: 11.6% | none |
| Ukraine | Ukrainian Galician Party |  Galicia | Lviv 2020: 5.7%
Ternopil 2020: 4.4% | none |
| Ukraine | Soyuz | ethnic Russians | Crimea 2010: 5.3% | none |
 United Kingdom | Scottish National Party |  Scotland | Scotland 2021: 40.3% | EFA |
| United Kingdom | Scottish Green Party | Scotland | Scotland 2021: 8.1% | EGP |
| United Kingdom | Plaid Cymru |  Wales | Wales 2021: 20.7% | EFA |
| United Kingdom | Sinn Féin |  United Ireland | Northern Ireland 2022: 29.0% | none |
| United Kingdom | Democratic Unionist Party |  Northern Ireland, Ulster unionism | Northern Ireland 2022: 21.3% | none |
| United Kingdom | Alliance Party of Northern Ireland | Northern Ireland | Northern Ireland 2022: 13.5% | ALDE |
| United Kingdom | Ulster Unionist Party | Northern Ireland, Ulster unionism | Northern Ireland 2022: 11.2% | ECRP |
| United Kingdom | Social Democratic and Labour Party | United Ireland | Northern Ireland 2022: 9.1% | PES |
| United Kingdom | Traditional Unionist Voice | Northern Ireland, Ulster unionism | Northern Ireland 2022: 7.6% | none |
| United Kingdom | Yorkshire Party |  Yorkshire | South Yorkshire 2022: 13.4% | EFA |
| United Kingdom | Mebyon Kernow |  Cornwall | Cornwall 2025: 4.0% | EFA |
