 In the 2013 federal election, Merkel's CDU won a landslide victory with 41.5% of the vote and formed a second grand coalition with the SPD, after the FDP lost all of its representation in the Bundestag.At the 2017 federal election, Merkel led the CDU to become the largest party for the fourth time, and was sworn in for a joint-record fourth term as Chancellor on 14 March 2018.In 2007, Merkel served as President of the European Council and played a central role in the negotiation of the Treaty of Lisbon and the Berlin Declaration.