Who are Syriza and what do they stand for?
Leader of Syriza party Alexis Tsipras (file pic)
An acronym meaning the "Radical Coalition of the Left", Syriza was formed in 2004 as an umbrella group
Led by 40-year-old Alexis Tsipras
The party first came to prominence following the 2008 Greek riots
It promises an end to Greece's painful austerity measures and wants to renegotiate its debt
Markets worry about a Greek debt default and a possible exit from the eurozone, though Syriza says it wants to keep the euro