Alexis Tsipras's Syriza party has won 35.07% of the vote in Greece's general election based on a 21% vote count, according to Interior Ministry data. The conservative New Democracy is on 28.65 percent - prompting its leader Vangelis Meimarakis to concede defeat. An exit poll after Sunday's election pointed to a narrow victory by the Syriza party, which it predicted would receive between 30% and 34% of the vote.