Basen on most polling, about 4-5%, though people shift in and out of undecided mode (for instance, you just went from Romney to undecided)
I tend to think that it could be even lower, maybe 3%. Many "undecideds" are really decided, and they just convince themselves that they have an open mind but generally go one way or another in most elections. It's crazy to think that all of this election hoop-la is vying for maybe 4-5 million people at this point - and that's nationally. When we are talking about swing states, it's probably a low six-digit number.
