Conservative activist Gary Palmer easily won the Republican runoff for U.S. House in Alabama's 6th Congressional District on Tuesday.

With half of precincts reporting, the Associated Press called the race for Palmer, who led state Rep. Paul DeMarco (R) 62 percent to 38 percent.

The two candidates competed for the seat of retiring Rep. Spencer Bachus (R).

DeMarco was the leading vote-getter in the primary. But Palmer got a boost from the anti-tax Club for Growth, which spent money to help him in the runoff. The Club, which has experienced its share of setbacks this election year, originally backed another candidate who did not make the runoff.

Palmer will be expected to coast to victory in November. The district gave 74 percent of its vote to Mitt Romney in 2012.