Everyone remembers George H. W. Bush's famous promise not to raise taxes, right?:
Bill Clinton defeated George H. W. Bush by reminding voters of that broken promise:
Remember Barack Obama's promise that he would not raise taxes on those earning less than $250,000?
Obama may not have made a pledge as memorable as George H. W. Bush's but he broke his promise that he wouldn't raise taxes on Americans making less that $250,000. I expect Mitt Romney make a similar commercial in the same way Clinton did with Bush.
Team Romney, you know what to do. Do it.