Forces For the 1997 parliamentary elections, an alliance named United Democratic Forces was formed around SDS. The same name was later used for other elections and parliamentary groups. The Blue Coalition In early 2009 an alliance was formed together with Democrats for a Strong Bulgaria for the European Parliament elections and National Assembly elections. The coalition was named the Blue Coalition and included some other parties. The Reformist Bloc The coalition agreement to form the alliance of the Reformist Bloc was signed on 20 December 2013. The five parties that signed the agreement were the Union of Democratic Forces, Democrats for a Strong Bulgaria, Bulgaria for Citizens Movement, People's Party Freedom and Dignity, and the Bulgarian Agrarian National Union. GERB Since 2019 the party is in a coalition with GERB. List of chairmen Chairmen of the Coordination Council Zhelyu Zhelev (1989–1990) Petar Beron (1990) Filip Dimitrov (1990–1994) Ivan Kostov (1994–1997) Chairmen and Chairwomen of the unified party Ivan Kostov (1997–2001) Ekaterina Mihailova (2001–2002) Nadezhda Mihailova (2002–2005) Petar Stoyanov (2005–2007) Plamen Yurukov (2007–2008) Martin Dimitrov (2008–2012) Emil Kabaivanov (2012–2013) Bozhidar Lukarski (2013–2018) Rumen Hristov (2018–present) Election results See also References External links Official website Bulgarian Subject Files - Political Parties: Union of Democratic Forces, Blinken Open Society Archives, Budapest 1989 establishments in Bulgaria Political parties established in 1989 Anti-communism in Bulgaria Anti-communist parties Christian democratic parties in Europe Conservative parties in Bulgaria International Democrat Union member parties Member parties of the European People's Party National conservative parties Organizations of the Revolutions of 1989 Pro-European political parties in Bulgaria