WASHINGTON (Reuters) – U.S. Representative Dan Newhouse of Washington, one of 10 House Republicans who bucked the party and voted to impeach former President Donald Trump over the Jan. 6 attack on the U.S. Capitol, defeated a Trump-backed challenger and advanced to the general election, Edison Research projected late on Friday. Newhouse’s opponents included Loren Culp, whose campaign website boasts a Trump endorsement and contains a picture of Culp with the former president. Culp came in third place in the primary. Newhouse, who was first elected in 2014, will face off against Doug White, a fa…