On 8 February 2013, Bouffier agreed to the proposal of the President Joachim Gauck to hold the state elections on the same day as Germany's federal elections. When the official result gave no major parties and their traditional coalition partners a clear majority in the parliament, Bouffier decided to break ranks with the rest of Chancellor Angela Merkel's conservative party and seek a coalition government with the Greens rather than the Social Democrats (SPD). He thereby created only the second CDU-Green coalition to govern a German state, after the previous government of Hamburg. On the federal level, he was part of the 15-member leadership circle chaired by Merkel, Horst Seehofer and Sigmar Gabriel in the negotiations to form a coalition government.