Representative John Sullivan of Oklahoma, a Republican, was defeated by Jim Bridenstine, a tea-party challenger:

Sullivan survived a 2010 primary after taking time away from Congress, citing his “addiction to alcohol.” On Tuesday, he lost narrowly amidst a spirited — if under-funded — challenge from Bridenstine, a Navy pilot who raised less than $300,000 for the race.
With 94 percent of precincts reporting, Bridenstine led Sullivan 54 percent to 46 percent. AP has called the race for Bridenstine.

“The only mistake I made was I ignored it for too long,” Sullivan said.