Incumbent Republican Tom Coburn has defeated two challengers from his own party in a primary election for a U.S. Senate seat in Oklahoma.
Coburn defeated perennial candidate Evelyn Rogers of Tulsa and retired teacher Lewis Kelly Spring of Hugo on Tuesday.
Coburn's crusades against government spending and waste in Washington have made him the darling of Oklahoma conservatives. The Muskogee physician also has opposed home-state spending projects known as earmarks. He is seeking a second term and says he will not seek a third if he wins this fall.
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