Former vice-presidential candidate Sarah Palin has endorsed John Koster for Washington state's second congressional district.

Foster, a dairy farmer, Snohomish County councilman and former three-term state representative, is running against five-term incumbent Rep. Rick Larsen.

"John is a strong pro-family, pro-2nd Amendment, pro-development fiscal conservative who will work to rein in the excesses of an out of control federal government," Palin wrote Saturday night on her Facebook page. "He’s just the sort of Constitutional Commonsense Conservative we need in DC."