Jens Böhrnsen

Jens Böhrnsen is a German politician of the SPD who served as President of the Senate and Mayor of Bremen from 2005 to 2015. From 1 November 2009 until 31 October 2010, he was President of the Bundesrat. As such, he was acting head of state of Germany from the resignation of President Horst Köhler on 31 May 2010 until the election of Christian Wulff on 30 June 2010. Böhrnsen resigned in 2015 after his party sustained losses in the state parliament election.