Britain's Prime Minister David Cameron delivers a speech to placard waving Conservatives during an European election campaign rally at a science park in Bristol

Establishment Republicans have been delighted by the victory of Thom Tillis, their favored candidate in last week’s North Carolina primary. After expensive advertising campaigns by establishment bagmen like the U.S. Chamber of Commerce and Karl Rove’s American Crossroads, mainstream conservatives believe they have a candidate who can beat Democrat Kay Hagan to win a valuable Senate seat in November.