Bulgarians cast their votes in their sixth parliamentary election in three years as well as the EU vote with experts seeing little chance of an end to political instability in the Balkan EU member. Conservative former premier Boyko Borisov, whose previous decade-long rule ended with massive anti-corruption protests, seems set to remain the country's major political player. But the 64-year-old is expected to continue to struggle to find coalition partners to govern, with analysts predicting yet another election in the fall. IMAGES AND SOUNDBITES