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Alexis Tsipras led the political party Syriza from 2008 to 2023. Syriza is a centre-left, social democratic and anti-austerity party in Greece. It was founded in 2004 by former members of the Communist Party of Greece. In the 2015 Greek legislative election, Syriza won the largest number of seats in parliament, and Tsipras became Prime Minister of Greece.