FILE - In this Jan. 3, 2017, file photo, House Speaker Paul Ryan of Wis. administers the House oath of office to Rep. Kevin Cramer, R-N.D., during a mock swearing in ceremony on Capitol Hill in Washington. In North Dakota, where Donald Trump won in a landslide last year, Republicans' lone Senate candidate, Cramer, is a little-known state lawmaker, and a potato farmer, from a remote small town closer to the Canadian border than the state capital Bismarck. While established Republicans and business leaders in other states Trump carried are running to topple Democratic senators, the GOP is struggling to land a big name in North Dakota.(AP Photo/Zach Gibson, File)