 He defeated 12-year incumbent Republican Brenda Reneau, who received 49.85%, or 453,645 votes, after having lost to her in the 2002 election.Fields was defeated for reelection to a second term by Republican Mark Costello in the 2010 election.In February 2008, Fields asked "for forgiveness" from the people of Oklahoma for allegedly stealing a guitar from a professional bull rider while intoxicated at a rodeo.