A crowded field of candidates is seeking to replace retiring Republican Rep. Doc Hastings. The 4th District, which includes Yakima and the Tri-Cities, hasn't elected a Democrat since 1992.
The presumed GOP front-runners include Clint Didier, a former NFL star and now a tea party candidate, Dan Newhouse, a former state legislator and state Sen. Janea Holmquist from Moses Lake.
The district covers one of the nation's major fruit and vegetable baskets, growing much of the U.S. supply of apples, cherries, grapes and hops to flavor beer. It is also home to the giant Hanford Nuclear Reservation, a federal installation that contains the nation's largest volume of nuclear waste.