 German electoral law conventionally seeks to create overall proportionality in legislatures; ie, the ratio of seats distributed between each party should, as closely as possible, match the ratio of votes won between each party.In the 2009 election, the CDU won a large majority of the 40 direct mandates, meaning it held 11 more seats than was proportional in the 69-seat Landtag.The Schleswig-Holstein electoral law contains provisions to allocate leveling seats in this situation.