Peter Harry Carstensen is a German politician of the Christian Democratic Union (CDU). From 2005 to 2012 he was Minister President of the state of Schleswig-Holstein, serving as President of the Bundesrat in 2005/06.

The 2009 Schleswig-Holstein state election was held on 27 September 2009 to elect the members of the Landtag of Schleswig-Holstein. It was held on the same day as the 2009 federal election and the 2009 Brandenburg state election.