The new ad, "United," says Club For Growth president Pat Toomey, "demonstrates [Huckabee's] willingness to raise taxes, with his tax increases far surpassing his tax cuts." With this new ad, the Club has increased its ad buy in Iowa, adding an additional $175,000 to the effort and bringing the total ad buy to $550,000 over three weeks.

The Huckabee campaign responds to the ad here.