Republican Sean Duffy is running for the House seat of retiring Democrat Dave Obey held for 41 years. Duffy has been Ashland County district attorney since 2002. He is also a professional lumberjack athlete who has won log-rolling competitions and speed-climbing world championships. He was a cast member of "The Real World: Boston" in 1997 and later married Rachel Campos, who was on the San Francisco edition of that MTV reality show.