Complex sentence: At the 2013 federal election, Merkel led the CDU/CSU to 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.
Split into simpler sentences: At the 2013 federal election, Merkel led the CDU/CSU to a landslide victory with 41.5% of the vote. However, the FDP lost all of its representation in the Bundestag.