The U.S. Chamber of Commerce is launching ad buys for more establishment-aligned Republicans, including one former Democrat who recently switched parties.

The Chamber will run ads for Rep. Shelley Moore Capito (R) in the open West Virginia Senate race. It will also run ads for Rep. Mike Simpson (R-Idaho), who faces a tea party-backed primary challenger, and West Virginia state Sen. Evan Jenkins, who recently switched parties to challenge longtime Rep. Nick Rahall (D-W.Va.).