What’s wrong with Kansas Pennsylvania? Not as much is wrong with the state as it was a few weeks ago.  The latest Morning Call/Muhlenberg College poll has Santorum knocking on the margin of error.

The latest poll showed 46 percent of voters favoring Casey with 41 percent supporting Santorum, with 13 percent undecided. In August, it was 45 percent for Casey and 39 percent for Santorum, with 16 percent undecided. Borick attributed that slide to the blitz of negative advertising mounted by both Casey and Santorum… The poll, conducted from Oct. 3 to Oct. 8, has a margin of error of plus or minus 4.3 percentage points.

While this is a departure from some other polls, the lesson of polls these days seems to be less about the numbers and more about the momentum.  Santorum is well known for finishing his races well and Casey is notorious for falling apart in the last days.  There seems to be some of that going on here as the Harrisburg paper writes, “Casey, meanwhile, has come under fire for dodging Santorum at a pair of public forums last month. Nor has Casey been aided by a campaign strategy that seems designed to make him purposefully inaccessible.”

The polling average for this race, as posted by Real Clear Politics, still gives the lead to Casey by almost 10 points. But for Santorum, who was once rumored as a potential 2008 candidate, I’d say this race is far from over.