Factbox - How Bulgaria's parliamentary election will work

A woman walks past posters of the right-wing Reformist Bloc (L), the Bulgarian Socialist Party (C) and newly formed populist party "Bulgaria Without Censorship" in Sofia October 3, 2014. REUTERS/Stoyan Nenov

REUTERS - Bulgarians will vote on Sunday in the European Union country's ninth general election since the fall of communism in 1989. Led by a former bodyguard and karate expert, the centre right GERB party is expected to win but fall short of a majority, which could spark a period of haggling with smaller parties and the opposition to shore up support. COUNTRY DETAILS: GEOGRAPHY: Bordered to the north by Romania, to the east by the Black Sea, to the south by Turkey and Greece, to the west by Serbia and Macedonia POPULATION: 7.3 million, according to the statistics office ETHNICITY: 84.8 percent ethnic Bulgarians, 8.8 percent ethnic Turks, 4.9 percent Roma. (2011 census) RELIGION: Christian Orthodox (80 percent), Muslim (12 percent). LANGUAGE: The official language is Bulgarian. POLITICAL PARTIES Apart from GERB, the Socialists, the ethnic Turkish MRF party, the right-wing Reformist Bloc, the populist Bulgaria Without Censorship party look certain to beat the 4 percent threshold to enter parliament. The nationalist Patriotic Front and the Attack party, as well as the left-wing ABV could also win seats. CONTESTED POSTS About 6,000 candidates, grouped in 19 parties and 6 coalitions, as well as three independent candidates, are vying for seats in the 240-member parliament. There are 11,729 polling stations, including 428 abroad. Polls will open at 6 a.m. (0300 GMT) and will close at 7 p.m. (1600 GMT). HOW A GOVERNMENT IS FORMED Final results, including seat allocation, are expected to be announced on Oct. 8. President Rosen Plevneliev then has 30 days to convene parliament, after which he will begin consultations and give the leading party a mandate to form a government. (Reporting by Angel Krasimirov; editing by Matthias Williams)