Complex sentence: During the 2006 Liberal leadership convention to replace Paul Martin, Bains threw his support behind Ontario Education Minister Gerard Kennedy, and after Kennedy dropped out before the third ballot, he joined Kennedy in supporting the eventual winner and new party leader, Stéphane Dion.
Split into simpler sentences: During the 2006 leadership convention for the Liberal Party, Bains threw his support behind Ontario Education Minister Gerard Kennedy. When Kennedy dropped out before the third ballot, he joined Kennedy in supporting the eventual winner and new party leader, Stéphane Dion.