With just a few weeks to go until November 7, Senator Rick Santorum's chances of securing reelection fade a bit more every day. The latest Rasmussen Reports election poll finds that challenger Bob Casey, Jr. has a thirteen point advantage, 54% to 41% (see crosstabs). That’s the same margin we saw in our last survey.

When leaners are added, Casey leads by twelve, 55% to 43%. Leaners are those who don’t initially commit to voting for either candidate but express a preference when asked a follow-up question.

The race remains in the "Democrat" column in our Senate Balance of Power summary.

Both candidates attract about four fifths of their partisan base. But Casey has a three-to-one advantage—72% to 24%—among unaffiliated voters.

Among all voters, Santorum is viewed favorably by only 46%. He is viewed unfavorably by 52% including 39% with a "very unfavorable" opinion of their Senator. Fifty-eight percent (58%) of Democrats and 61% of unaffiliated voters view Santorum "very unfavorably."

Casey gets thumbs up from 57% of all voters.

A plurality of Pennsylvania voters (36%) say the terrorists are winning the war on terror. Only 32% say the U.S. and its allies are winning.

Crosstabs are available for Premium Members only.