U.S. Sen. Bob Casey, up for re-election in 2012, has a job approval rating of 39 percent, according to a Quinnipiac University Poll released this morning.  Casey was favored 43-35 percent in a match-up two years from now with an unnamed Republican opponent.  Forty percent said he deserves another term while 33 percent disagreed.

The poll of 1,584 registered voters -- you can read it here -- was conducted from Dec. 6-13 and has a margin of error of +/- 2.5 percent.