Latest from Rasmussen:

2010 Senate (trends)
56% Castle (R), 27% Coons (D)
Favorable / Unfavorable
Chris Coons: 47 / 30
Mike Castle: 66 / 25
Job Approval / Disapproval
Pres. Obama: 50 / 49 (chart)
Gov. Markell: 57 / 36 (chart)

Of course, the electorate has had about a day to get used to the idea of Chris Coons as the Democrats’ Senate candidate.

The real surprise to me is that Obama’s approval/disapproval split is nearly even . . . in Delaware.