Complex sentence: He was an unsuccessful candidate for the Democratic nomination in the 2009 Virginia gubernatorial election and was the Democratic nominee in the 2013 Virginia gubernatorial election, running against Republican candidate Ken Cuccinelli and Libertarian candidate Robert Sarvis.
Split into simpler sentences: He was an unsuccessful candidate for the Democratic nomination in the 2009 Virginia gubernatorial election, and was the Democratic nominee in the 2013 Virginia gubernatorial election. During the 2013 election, he ran against Republican candidate Ken Cuccinelli, and Libertarian candidate Robert Sarvis.