Klaus Wowereit (born 1 October 1953) is a German politician. He was born in Berlin. He was the SPD Governing Mayor of Berlin from 2001 to 2014. He and his party won 31.4% of the votes in the 2001 state elections, and he started a coalition government with Linkspartei.PDS. He was President of the Bundesrat in 2001/02. He was re-elected as Governing Mayor in 2006, and has carried on the coalition.