Anti-austerity Syriza party leader Alexis Tsipras has vowed to end Greece’s “five years of humiliation and pain” after his general election win, the BBC reports.
Before cheering supporters, Mr Tsipras pledged to renegotiate Greece’s massive international bailout.
With nearly all of the votes counted in Sunday’s poll, Syriza looks set to have 149 seats, just two short of an absolute majority.
With most votes counted, Syriza polled 36%, while the outgoing New Democracy won 28%.
Another five parties – including the far-right Golden Dawn and centrist The River – are expected to be represented in the 300-member parliament.
Syriza is thought likely to begin talks with smaller parties on forming a government.
Outgoing Prime Minister Antonis Samaras has admitted defeat.
