A trio of environmental groups on Tuesday launched a $1 million campaign to help Rep. Bruce Braley (D) win the race for U.S. Senate in Iowa by taking on his opponent, state Sen. Joni Ernst (R).
The League of Conservation Voters, the Sierra Club and the Environmental Defense Action Fund are combining forces in the effort, which kicks off with an LCV TV ad that ties Ernst to Sarah Palin and the Koch Brothers.
The narrator says Ernst wants to "abolish the EPA, giving polluters a pass. That's why extremist Sarah Palin and the billionaire Koch brothers want Ernst in Washington."
The Iowa Senate race is a focal point for environmental activists and groups. Billionaire climate activist Tom Steyer, who has vowed to spend as much as $100 million in the 2014 elections (half from donors, half from personal money), has identified the Iowa Senate race as a target.
Ernst's campaign did not immediately respond to request for comment.