Nate Silver wrote about...

...Mitt Romney's lack of coattails on Saturday, "G.O.P. Senate Hopes Fade, Even as Romney's Rise, Polls Show":

The FiveThirtyEight forecast model now gives Republicans just about a 16 percent chance of winning control of the Senate. This is a precipitous drop from just two months ago. On Aug. 19, the forecast put their odds at close to 62 percent.

I wonder if the Republican Party brand is so damaged that it will have coattails in reverse and prevent Romney from winning the White House. How many people who vote for a Democrat for the Senate will want Romney as president?