Complex sentence: Buchanan, who won a razor thin victory in 2006, was easily re-elected in 2008 in a rematch with Christine Jennings, receiving 55% of the vote to 38% for Jennings.
Split into simpler sentences: Buchanan, who won narrowly in 2006, but was easily re-elected in a 2008 rematch with Christine Jennings. He received 55% of the vote to 38% for Jennings.