Ernst, a state senator, is running in a crowded field of Republicans vying for retiring Democratic Sen. Tom Harkin's seat. She recently landed the endorsement of Mitt Romney and released her first TV ad Tuesday. In the commercial, which is backed by a very modest ad buy, Ernst says, "I grew up castrating hogs on an Iowa farm. So when I get to Washington, I'll know how to cut pork."
Responding to Palin's endorsement, Ernst said, "As our campaign builds energy toward a primary win in June, Sarah Palin's roaring support will help me to victory, and as a result, make 'em squeal in Washington."