Blessed with a TV-star smile, an athlete's body and lawyerly gifts of gab and jab, Ashland County District Attorney Sean Duffy seems born for the role of small-town guy bucking the odds to win a seat in Congress on his first try. After U.S. Rep. David Obey's stunning retirement announcement last week, pundits and friends declared the father of six the new front-runner in the 7th Congressional District race. But Duffy, a world-champion lumberjack and speed-climber of 90-foot cedar poles, knows that winning means surviving the nerve-racking plunge to the finish. "Whether it's Dave Obey or someone else, this is...