Nate Silver; "Ohio polls show trouble for Romney" downgrades Romney chance to 31%

[grantcart]

15. Problem is that bombarding is not going to be effective with well defined sides

less than 10% of swing state voters are undecided. Once they start seeing the ads over and over again they actually will react against them.

Then there is this. A campaign guy told me yesterday that all of the key media spots in the swing states in the last 3 weeks of the campaign have already been bought and paid for.

There is only so many mailings that you can send out.