In this photo taken Saturday, Aug. 11, 2012, Heidi Heitkamp, left, the North Dakota Democratic candidate for the U.S. Senate, speaks during the opening of a North Dakota Democratic campaign office in Dickinson, N.D. At right is Ryan Taylor, with hat, the North Dakota Democratic candidate for governor, and Ryan Nagle, a Democratic campaign staffer. Heitkamp is locked in a tight race with Republican Rick Berg to succeed retiring Democratic U.S. Sen. Kent Conrad, and the race's outcome is considered crucial to GOP chances of winning Senate control. (AP Photo/Dale Wetzel)
