A new Pennsylvania poll shows President Obama leading his two most likely GOP opponents and Sen. Bob Casey Jr. (D-Pa.) in good shape for reelection.

The Muhlenberg College/Allentown Morning Call poll showed that 51 percent of voters believe Obama does not deserve reelection. But he led Mitt Romney by 45 percent to 41 and Newt Gingrich by a substantial 52 percent to 35 in the Democratic-leaning state.

Casey appears to be on safer ground. A majority of voters approve of the job he is doing, at 54 percent, while just 24 percent disapprove, and 54 percent likewise believe he should be reelected. That's up from a 40 percent approval rating in an August poll.

Republicans hope they can remain competitive in Pennsylvania, a large state with 20 votes in the Electoral College. But these poll numbers indicate their eventual nominees for president and Senate there will have uphill battles.

The poll of 422 registered voters was conducted from Nov. 28 through Dec. 7 and has a margin of error of plus or minus five percentage points.