Complex sentence: An election for the leadership of the Bloc Québécois was held on December 11,2011 to replace Gilles Duceppe, who resigned on May 2,2011, after the party lost 43 of its 47 seats, including his own seat, in the 2011 federal election.
Split into simpler sentences: An election for the leadership of the Bloc Québécois will be held on December 11,2011. The winner will replace Gilles Duceppe, who resigned on May 2,2011, after the party lost 43 of its 47 seats, including his own seat, at the 2011 federal election.