Constitutional Assembly elections were held in Bulgaria

Bulgaria

Bulgaria , officially the Republic of Bulgaria , is a parliamentary democracy within a unitary constitutional republic in Southeast Europe. The country borders Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, as well as the Black Sea to the east...

 on 10 June 1990, with a second round for eighteen seats on 17 June. They were the country's democratically open elections after the fall of socialism. The new electoral system was changed from 400 single-member constituencies used during the Communist-era to a split system whereby half were elected in single member constituencies and half by proportional representation

Proportional representation

Proportional representation is a concept in voting systems used to elect an assembly or council. PR means that the number of seats won by a party or group of candidates is proportionate to the number of votes received. For example, under a PR voting system if 30% of voters support a particular...

. The result was a victory for the Bulgarian Socialist Party

Bulgarian Socialist Party

The Bulgarian Socialist Party is social-democratic political party in Bulgaria and successor to the Bulgarian Communist Party. The BSP is a member of the Party of European Socialists and Socialist International, and is currently led by Sergei Stanishev....

, which won 211 of the 400 seats. Voter turnout was 90.3%.

Results

Party	Constituency			PR			Total seats
	Votes	%	Seats	Votes	%	Seats
Bulgarian Socialist Party Bulgarian Socialist Party The Bulgarian Socialist Party is social-democratic political party in Bulgaria and successor to the Bulgarian Communist Party. The BSP is a member of the Party of European Socialists and Socialist International, and is currently led by Sergei Stanishev....			114	2,886,363	47.2	97	211
Union of Democratic Forces Union of Democratic Forces (Bulgaria) The Union of Democratic Forces is a political party in Bulgaria, founded in 1989 as a union of several political organizations in opposition to the communist government. In February 1997 the Union was transformed into a single unified party with the same name...			69	2,216,127	36.2	75	144
Bulgarian Agrarian National Union Bulgarian Agrarian National Union Bulgarian Agrarian National Union also tiranslated to English as Bulgarian Agrarian People's Union is a political party devoted to representing the causes of the Bulgarian peasantry. It was most powerful between 1900 and 1923. In practice, it was an agrarian movement...			0	491,597	8.0	16	16
Movement for Rights and Freedoms Movement for Rights and Freedoms The Movement for Rights and Freedoms is an ethnic Turkish party in Bulgaria. The MRF is a member of the Liberal International and considers itself a liberal party, rather like the Swedish People's Party - party of the Swedish-speaking minority of Finland...				368,929	6.0		24
Patriotic Party of Labour				36,668	0.6		2
Alternative Socialist Party Alternative Social-Liberal Party Alternative Social-Liberal Party , was founded on February 11, 1990 as the Alternative Socialist Party . The party was formed previously by a minority fraction of the Bulgarian Communist Party.The party was registered on March 7, 1990 with first president Nikolay Vasilev...				121,514	2.1		3
Alternative Socialist Union
Era-3
Parliamentary Movement for the Tarnovo Constitution
17 other parties
Invalid/blank votes		–	–	212,136	–	–	–
Total			200	6,333,334	100	200	400
Source: Nohlen & Stöver, IPU