Former prime minister Boyko Borisov's GERB party won Bulgaria's snap parliamentary election, but will have to find coalition partners to govern, partial official results confirmed Monday.
The pro-Western GERB won 32.58 per cent of the votes, the election commission said with around 90 per cent of the ballots counted.
The Socialist Party (BSP), which wants closer ties with Moscow, remains in opposition with 26.82 per cent.
Borisov will have to forge an alliance with some of the three remaining small parties which won more than the required 4 per cent of the votes to claim legislative seats.
The rightist United Patriots bloc has 9.17 per cent, the Party for Rights and Freedoms of ethnic Turks has 8.93 and populist newcomers Volya (Will) have 4.11 per cent.
Full official results are due to be released within three days.
The elections were triggered two years early when Borisov quit in November following the loss of GERB's presidential candidate to Rumen Radev, a former air force general backed by the BSP.