Editing Dominant-party system (section)

===Europe===
*{{Flag|Austria}}
** {{flag|Lower Austria}}
***[[Austrian People's Party]]: Led by [[Johanna Mikl-Leitner]], governor (since 2017); In power since 1945{{NoteTag|name=ÖVP|The predecessors of the ÖVP (the [[Christian Social Party (Austria)|Christian Social Party]]) ruled from 1907 until 1933 alone, with the help of the [[Fatherland Front (Austria)|Fatherland Front]] from 1933 until 1934, and the Fatherland Front ruled alone from 1934 until the [[Anschluss]] of 1938.}}
*** [[2023 Lower Austrian state election|State election, 2023]]: VPNÖ 39.93% and won 23 of 56 seats
*** [[2019 European Parliament election in Austria|European Parliament election, 2019]]: ÖVP 40.1%
*** [[2019 Austrian legislative election]]: ÖVP 42.3%
** {{flag|Tyrol}}
*** [[Austrian People's Party]]: Led by [[Anton Mattle]], governor (since 2022); In power since 1945
*** [[2022 Tyrolean state election|State election, 2022]]: TVP 34.71% and won 14 of 36 seats
*** [[2019 European Parliament election in Austria|European Parliament election, 2019]]: ÖVP 42.6%
*** [[2019 Austrian legislative election]]: ÖVP 45.8%
** {{flag|Vienna}}
*** [[Social Democratic Party of Austria]]: Led by [[Michael Ludwig]], [[List of mayors of Vienna|mayor]] (since 2018); In power since 1945{{NoteTag|The [[Social Democratic Party of Austria|SPÖ]] was previously the continuous ruling party of Vienna from 1919 until 1934, before being taken over by the [[Fatherland Front (Austria)|Fatherland Front]] and the 1938 [[Anschluss|Anschluss of Austria]].|name=SPÖ}}
*** [[2020 Viennese state election|State election, 2020]]: SPÖ 41.62% and won 46 of 100 seats
*** [[2019 Austrian legislative election]]: SPÖ 27.1%
*** [[2019 European Parliament election in Austria|European Parliament election, 2019]]: SPÖ 30.3%
** {{flag|Vorarlberg}}
*** [[Austrian People's Party]]: Led by [[Markus Wallner]], governor (since 2011); In power since 1945
*** [[2019 Vorarlberg state election|State election, 2019:]] VVP 43.53% and won 17 of 36 seats
*** [[2019 European Parliament election in Austria|European Parliament election, 2019]]: ÖVP 34.6%
*** [[2019 Austrian legislative election]]: ÖVP 36.6%
** {{flag|Upper Austria}}
*** [[Austrian People's Party]]: Led by [[Thomas Stelzer (born 1967)|Thomas Stelzer]], governor (since 2017); In power since 1945
*** [[2021 Upper Austrian state election|State election, 2021:]] OÖVP 37.61% and won 22 of 56 seats
*** [[2019 Austrian legislative election]]: ÖVP 36.8%
*** [[2019 European Parliament election in Austria|European Parliament election, 2019]]: ÖVP 35.1%
*{{Flag|Estonia}}
** [[Estonian Reform Party]] has won all national and local elections in [[Tartu]], the second biggest city, since 1995. Holding mayor's position since 1996.
*{{Flag|Germany}}
** {{flag|Bavaria}}
***[[Christian Social Union in Bavaria]] (CSU): Led by [[Markus Söder]], [[List of Ministers-President of Bavaria|Minister-President]] (since 2018); In power since 1946, with a sole hiatus from 1954 to 1957. From 1966 to 2003 and 2013 to 2018, CSU ruled with an absolute majority. Its share of votes peaked in 1974 at 62%. From 2003 to 2008, CSU held a two-thirds supermajority in the Bavarian Landtag. Since the 2010s, the CSU's dominance has somewhat eroded (31.7% in the [[2021 German federal election]]; 37.2% in the [[2018 Bavarian state election]]), but it is still considered impossible to form a government led by another party in Bavaria. Even before 1946, Bavaria was already a dominant party system before the Third Reich dominated by the Bavarian People's Party (1918-1933), the Bavarian Centrist Party (1887-1918) and the Bavarian Patriot Party (1869-1887). 
**{{flag|Saxony}}
*** [[Christian Democratic Union of Germany|Christian Democratic Union]] (CDU):<ref>{{cite news |url=http://www.sueddeutsche.de/politik/landtagswahl-in-sachsen-cdu-sucht-nach-einem-neuen-partner-1.2108781 |title=CDU sucht nach einem neuen Partner |website=Sueddeutsche.de |date=August 31, 2014|last=Dresden|first=Cornelius Pollmer}}</ref> In power since the establishment of the state in 1990. CDU ruled with an absolute majority until 2004, and even a two-thirds supermajority in the Landtag from 1994 to 2004. Its popularity peaked at 56.9% in the 1999 election. In the 2010s, CDU's dominance eroded significantly. In the [[2017 German federal election]], Saxony's CDU came in second place for the first time in the history of the state, reaching 26.9%, behind the far-right [[Alternative für Deutschland]]. Due to the irreconcilability of left-wing and right-wing opposition parties, it is still considered impossible to form a state government led by another party than CDU.
**{{Flag|Brandenburg}}
***[[Social Democratic Party of Germany|Social Democratic Party]] (SPD):<ref>{{Cite web |title=Brandenburg election: Olaf Scholz's SPD narrowly beats AfD - exit polls |url=https://www.bbc.com/news/articles/c24315lrv18o |access-date=2024-09-24 |website=www.bbc.com |date=September 22, 2024 |language=en-GB}}</ref> Led by [[List of minister-presidents of Brandenburg|Minister-President]] [[Dietmar Woidke]] (since 2013). In power since the state's establishment in 1990. currently. It won an absolute majority of seats in the [[Landtag of Brandenburg|Landtag]] and swept every single-member constituency in [[1994 Brandenburg state election|1994]], winning 54.1% of the vote. The SPD also swept all of Brandenburg's single-member constituencies in the [[2021 German federal election|2021 federal election]].
* {{flag|Hungary}}
** [[Fidesz–KDNP]]: In power since 2010 (won in the [[2009 European Parliament election in Hungary|European Parliament election, 2009]]: 14 of 22 of seats for Hungary)
** Led by [[Viktor Orbán]], [[Prime Minister of Hungary|prime minister]] (since 2010)
** [[2022 Hungarian parliamentary election]]: 54.13% and qualified majority, 135 of 199 seats
** [[2019 European Parliament election in Hungary|European Parliament election, 2019]]: 52.56% and 13 of 21 of seats for Hungary
* {{Flag|Italy}}
** {{flag|Emilia-Romagna}}
*** [[Democratic Party (Italy)|Democratic Party]]{{NoteTag|name=PD|Formerly its predecessors [[Italian Socialist Party|PSI]] (before 1924), [[Italian Communist Party|PCI]], [[Democratic Party of the Left|PDS]] and [[Democrats of the Left|DS]].}}: In power since 2007
*** [[2020 Emilia-Romagna regional election|Regional election, 2020]]: PD 34.7% and 23 of 50 seats
*** [[2024 European Parliament election in Italy|European Parliament election, 2024]]: PD 36.1% 
*** [[2022 Italian general election|Chamber of Deputies, 2022]]: PD 28.1%
** {{flag|Lombardy}}
*** [[Centre-right coalition (Italy)|Centre-right coalition]]: In power since 1994
*** [[2018 Lombard regional election|Regional election, 2018]]: CDX 56.27% and won 49 of 80 seats
*** Presidential election, 2018: Attilio Fontana 54.67%
*** [[2022 Italian general election|Chamber of Deputies election, 2022]]: CDX 50.6%
*** Senate election, 2018: CDX 50.4%
** {{flag|Tuscany}}
*** [[Democratic Party (Italy)|Democratic Party]]{{NoteTag|name=PD}}: In power since 2007
*** [[2015 Tuscan regional election|Regional election, 2015]]: PD 48.1%  and 25 of 41 seats
*** [[2014 European Parliament election in Italy|European Parliament election, 2014]]: PD 52.5% 
*** [[2018 Italian general election|Chamber of Deputies election, 2018]]: PD 29.6%
*** Senate election, 2018: PD 30.5%
** {{flag|South Tyrol}}
*** [[South Tyrolean People's Party]]: In power since 1948 (The [[Deutscher Verband|German Association]] dominated from 1921 and before that it was part of Tyrol)
*** [[1924 Italian general election]]: [[Deutscher Verband|German Association]], part of [[Lists of Slavs and Germans]] 80%
*** [[2013 Trentino-Alto Adige/Südtirol provincial elections#South Tyrol|Provincial elections, 2013]]: SVP 45.7% and 17 of 35 seats
*** [[2014 European Parliament election in Trentino-Alto Adige/Südtirol|European Parliament election, 2014]]: SVP 48.0% 
*** [[Italian general election, 2018 (Trentino-Alto Adige/Südtirol)|Chamber of Deputies election, 2018]]: SVP 48.8%
*** Senate election, 2018: SVP 49.8%
** {{flag|Veneto}}
*** [[Centre-right coalition (Italy)|Centre-right coalition]]: In power since 1994
*** Came in second place in Veneto to the [[Democratic Party (Italy)|Democratic Party]] in the [[2014 European Parliament election in Lombardy|European Parliament election, 2014]]: FI+LN+FdI 33.2%
*** [[2015 Venetian regional election|Regional election, 2015]]: CDX 52.2% and won 29 of 51 seats
*** Presidential election, 2015: Luca Zaia 50.1%
*** [[Italian general election, 2018 (Veneto)|Chamber of Deputies election, 2018]]: CDX 48.1%
*** Senate election, 2018: CDX 48.2%
* {{flag|Moldova}}
** {{flag|Transnistria|state}}
*** [[Political status of Transnistria|Self-declared state]]
*** [[Obnovlenie]]: In power since 2005
*** [[2020 Transnistrian parliamentary election|Parliamentary election, 2020]]: Renewal 27.79% and 29 of 33 seats
*** [[2016 Transnistrian presidential election|Presidential election, 2016]]: [[Vadim Krasnoselsky]], as independent candidate, 59.16%
* {{flag|Portugal}}
** {{flag|Madeira}}: the [[Social Democratic Party (Portugal)|Social Democratic Party]] has dominated political life in the [[Administrative divisions of Portugal#Autonomous regions|autonomous region]] of [[Madeira]] since the first regional elections, in 1976. [[Alberto João Jardim]] served as [[Presidents of the Regional Government of Madeira|President of the Regional Government]] uninterruptedly from 1978 to 2015.
*** [[2013 Portuguese local elections|Local elections, 2013]]: PSD 34.81%
*** [[2014 European Parliament election in Portugal|European Parliament election, 2014]] (in Madeira): PSD 31.0%
*** [[2015 Madeira regional election|Regional election, 2015]]: PSD 48.56% and 25 of 47 seats
*** [[2015 Portuguese legislative election]] (in Madeira): PSD 37.8% and 3 of 6 seats
* {{Flag|San Marino}}
** The [[Sammarinese Christian Democratic Party]] (PDCS) have always had a plurality of seats in the [[Grand and General Council]] since 1951, However it has not consistently formed the government. From 2016 to 2020 it was in opposition. The predecessor of the PDCS the [[Sammarinese People's Party]] was already biggest party in [[1920 Sammarinese general election|1920]].
** [[2019 Sammarinese general election|General election, 2019]]. PDCS 33.35%
* {{flag|Serbia}}
** [[Serbian Progressive Party]]: In power since 2012, led by [[Miloš Vučević]]
** [[2022 Serbian general election|Parliamentary election, 2022]]: SNS 44.27% and 120 of 250 seats
** [[2022 Serbian general election|Presidential election, 2022]]: [[Aleksandar Vučić]], 60.01%
** [[2020 Vojvodina provincial election]]: SNS 61.58% and 76 of 120
* {{flag|Spain}}
**{{flag|Basque Country}}
*** [[Basque Nationalist Party]], in power in the [[Basque Government]] from 1979 to 2009, and again since 2012.
*** [[2020 Basque regional election|Basque election, 2020]]: PNV 38.7%, 31 of 75 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Basque Country|Spanish Parliament election, November 2019]]: PNV 32.0%, 6 of 18 seats.
**{{flag|Castilla-La Mancha}}
*** [[Spanish Socialist Workers' Party]], in power in the [[Regional Government of Castile-La Mancha|Castilian-Manchegan Government]] from 1982 to 2011, and again since 2015.
*** [[2019 Castilian-Manchegan regional election|Castilian-Manchegan election, 2019]]: PSOE 44.1%, 19 of 33 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Castilla–La Mancha|Spanish Parliament election, November 2019]]: PSOE 33.1%, 9 of 21 seats.
**{{flag|Castile and León}}
*** [[People's Party (Spain)|People's Party]]{{NoteTag|name=People's Party|Formerly its predecessor [[People's Alliance (Spain)|People's Alliance]] (before 1989).}}, in power in the [[junta of Castile and León|Castile and León Government]] continuously since 1987.
*** [[2022 Castilian-Leonese regional election|Castilian-Leonese election, 2022]]: PP 31.4%, 31 of 81 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Castile and León|Spanish Parliament election, November 2019]]: PP 31.6%, 13 of 31 seats.
**{{flag|Community of Madrid}}
*** [[People's Party (Spain)|People's Party]], in power in the [[Government of the Community of Madrid]] continuously since 1995.
*** [[2021 Madrilenian regional election|Madrilenian election, 2021]]: PP 44.8%, 65 of 136 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Madrid|Spanish Parliament election, November 2019]]: PP 26.9%, 10 of 37 seats.
**{{flag|Galicia}}
*** [[People's Party (Spain)|People's Party]]{{NoteTag|name=People's Party|Formerly its predecessor [[People's Alliance (Spain)|People's Alliance]] (before 1989).}}, in power in the [[Xunta de Galicia|Galician Government]] from 1982 to 1987, from 1990 to 2005, and again since 2009.
*** [[2020 Galician regional election|Galician election, 2020]]: PP 47.6%, 41 of 75 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Galicia|Spanish Parliament election, November 2019]]: PP 31.9%, 10 of 23 seats.
* {{Flag|Ukraine}}
** {{flag|Kharkiv}}
***[[Kernes Bloc — Successful Kharkiv]] a party formed from members of the [[Party of Regions]], previously dominant in the [[Verkhovna Rada|Verkhovna Rada of Ukraine]], led by the [[List of mayors of Kharkiv|mayor]] of [[Kharkiv]] [[Hennadiy Kernes]], who was elected three times in a row in [[2020 Kharkiv local elections|elections]] with a result of more than 50% of the vote.<ref>{{Cite news |title=Геннадий Кернес, хозяин Харькова в инвалидном кресле |url=https://www.bbc.com/russian/features-55288508 |access-date=2024-01-30 |work=BBC News Русская служба |language=ru}}</ref>
* {{flag|United Kingdom}}:
** {{flag|Wales}}: 
*** [[Welsh Labour]] has won the majority of seats to the [[House of Commons of the United Kingdom|House of Commons]] in Wales in every election since [[1922 United Kingdom general election|1922]]. 
***It has also been the largest party in the [[Senedd]] (formerly known as the National Assembly for Wales, until 2020) since its inception in [[1999 Welsh Assembly election|1999]].
** {{flag|London}}:
*** [[London Labour]] has won the majority of seats to the [[House of Commons of the United Kingdom|House of Commons]] in London in every election since [[1997 United Kingdom general election|1997]]. It has also been the largest party in the [[London Assembly]] for most of its existence with exception to 2008–12.
**{{flag|Scotland}}:
*** [[Scottish Labour]] has won every election to the [[House of Commons of the United Kingdom|House of Commons]] in Scotland from [[1964 United Kingdom general election|1964]] to [[2015 United Kingdom general election in Scotland|2015]], where it was heavily defeated and reduced to 1 seat.<ref>{{Cite news |last1=Stacey |first1=Kiran |date=May 8, 2015 |title=SNP ends Labour domination in Scotland with election landslide |newspaper=Financial Times |url=http://www.ft.com/cms/s/2/f350d9ac-f4fa-11e4-8a42-00144feab7de.html#axzz3pFUtHHx8}}</ref> 
***It controlled the [[Scottish Parliament]] from its inception in [[1999 Scottish Parliament election|1999]] until the [[2007 Scottish Parliament election|2007 election]] where it lost to the [[Scottish National Party|SNP]].<ref>{{cite book |title=Scottish Politics |last=Cairney |first=Paul |author2=McGarvey, Neil |year=2013 |publisher=Palgrave Macmillan Limited |location=Houndmills |isbn=978-0-230-39046-1 |page=58 |url=https://books.google.com/books?id=ssqQmwEACAAJ }}</ref> It revived as the dominant party in Scotland in [[2024 United Kingdom general election in Scotland|2024]].