Longtime Virginia Republican Rep. Rob Wittman is emphasizing his humble roots rather than his deep experience as he campaigns this year in what's seen as the toughest race of his career. Observers say it's an attempt to insulate himself from attacks by his Democratic challenger, prosecutor Shannon Taylor, who is one of the many political candidates this year using an anti-corruption message to harness voter angst in a midterm election that’s otherwise been defined by concerns about the economy. The district, which leans red, could help determine control of the U.S. House.