Second District Congressman Greg Walden easily held off ultra-conservative GOP challenger Dennis Linthicum of Klamath Falls in Tuesday's Republican primary, outpolling him by more than three to one.
In November, Walden will face Democrat Aelea Christofferson of Bend, who also finished far ahead of her challengers, with Barney Spera, a retired union worker from Ashland, coming in a distant second.
In early returns, Walden had received 76 percent of the vote to Linthicum's 23 percent. Among Democrats, Christofferson had 61 percent to Spera's 21 percent.
Linthicum, who touted his anti-tax, pro-gun, anti-abortion stands, had attacked Walden, one of the most powerful Republican House members, as an insider who did not strictly follow conservative lines.
Walden, 57, is chairman of the National Republican Congressional Committee, which focuses on getting Republicans elected to the House. He was first elected to the Second District congressional seat in 1999.
Walden is a supporter of increasing timber harvests in national forests and an ardent opponent of President Obama's Affordable Care Act.
Christofferson, 61, is the founder and president of ATL Communications, which helps toll-free numbers reduce their routing costs and helps them re-establish service following disasters.
When she announced she was running for office, Christofferson resigned as a board member of Cover Oregon, the state's beleaguered health exchange.