Polls suggest Ernst is in a very close race against Rep. Bruce Braley (D). Iowa is one of about a dozen races that could determine which party controls the Senate in 2015.
In March, Ernst released an ad in which she said, "I grew up castrating hogs on an Iowa farm. So when I get to Washington, I'll know how to cut pork." At the end of that ad Ernst concluded, "Washington's full of big spenders. Let's make 'em squeal."
The spot went viral and helped introduce Ernst at a time when she was not well-known. She went on to coast to victory in the Republican primary.
In her newest ad, Ernst concludes, "Cleaning up the mess in Washington is going to take a whole lot of Iowa common sense."