Romney Takes 1 Point Lead in Colo., Cuts Obama's Margin in Half in Wisc.

The list of toss up states is growing

On the heels of last week's presidential debate, Mitt Romney has emerged with a one-point edge over President Obama in Colorado and has cut the president's lead in half in Wisconsin, according to a new Quinnipiac University/CBS News/New York Times poll.

In Wisconsin, where Mr. Obama led Romney by six percent last month, the president now holds just a three-point advantage, with 50 percent to Romney's 47 percent support. Last month, the president led Romney 51 to 45 percent.