Klaus Wowereit (born 1 October 1953) is a German politician, member of the SPD (Social Democratic Party), and has been the Mayor of Berlin since the 2001 state elections, where his party won a plurality of the votes, 29.7%. He served as President of the Bundesrat (the fourth highest office in Germany) in 2001/02. His SPD-led coalition was re-elected in the 2006 elections. He is also sometimes mentioned as a possible SPD candidate for the Chancellorship of Germany (Kanzlerkandidatur) in the next German federal election.
Read more about Klaus Wowereit: Background, Political Career, Personal Life