By E. Thomas McClanahan, Kansas City Star Editorial Page columnist

This really captures how rapidly President Obama has fallen in the polls. Strategists mulling whether he should go to Massachusetts to aid the sagging Martha Coakley note that he still has good numbers in the state, but he generates such a negative reaction in opponents that any trip to Massachusetts could be counterproductive.

[T]he intensity of voters who view him unfavorably, or who disapprove of his job performance, is so high that an appearance with Coakley could bring out more GOPers ready to vote for Brown than it could Dems set on their nominee.
"Obama is radioactive in polls," said one senior Dem operative who has seen the campaign's internal numbers. "Every time they dropped his name in a poll, it was awful. So you just can't take those kinds of chances."

The Dems are staring at another potential disaster. First New Jersey and Virginia, and now they're looking at Ted Kennedy's Senate seat possibly going to the Republicans.

UPDATE: He's going anyway.