Profile: Greek radical left leader Alexis Tsipras

Greek Radical Left (SYRIZA) party leader Alexis Tsipras promised to implement the third bailout and lead Greece to the exit of the debt crisis if his party wins Sunday's legislature election.

Tsipras led Syriza to victory in the general election held on Jan. 25, 2015, on the promise of tearing up the previous bailout deals and implementing an alternative plan to counter the debt crisis.

He became the youngest prime minister in Greek history since 1865 at the age of 40 and the first to take a civil oath instead of a religious at his swearing-in ceremony.

Tsipras enjoyed wide popularity in Greece and abroad. In 2015 he was voted by TIME magazine as one of the 100 most influential people globally.

After failing to reach an agreement with Greece's creditors, he called for a referendum in July to decide whether or not Greece should accept the bailout conditions proposed by their lenders.

Despite a resounding No, he came to an agreement with lenders for a third bailout provoking internal conflicts into his own party.

After SYRIZA's Left Platform headed the rebellion against the new bailout in a vote in the parliament, Tsipras submitted his resignation in late August, asking for a fresh mandate in a snap general election.

Born in Athens, the 41-year-old civil engineer, with studies at the National Technical University of Athens, has been a deputy in the Greek parliament since the general election of 2009, just before the Greek debt crisis broke out.

With communist party roots, he first came to the spotlight as a leading activist during Greek students' protests against an education reform law in the 1990s.

He ran for the mayorship of the City of Athens in 2006 achieving an impressive 10 percent result for a newcomer from SYRIZA and was elected party leader, the youngest in Greece, after the 2007 national elections.

Tsipras led SYRIZA through the 2012 elections, overseeing a swing of over 22 percent to the party, and becoming the leader of the main opposition.

He was elected vice president of the Party of the European Left (EL) during the 3rd Congress in December 2010, and was re-elected during the 4th Congress in December 2013.

After the European Parliament elections in 2014, he was the EL's candidate for European Commission president, but lost.

Tsipras and his partner Peristera Baziana have two sons. Endit