Not to beat a dead horse, but Franklin & Marshall College (the folks who do the Keystone poll) has released some more internals on the PA Senate race and, well, things look bleak for Santorum. In addition to losing most demographic and geographic groupings, Santorum is getting only 62% support from Republicans (compared to 74% Dems for Casey) and he's losing Independents to Casey by 31 points (52-21).

Bret Lieberman of the Patriot News writes that despite the power of incumbency, the brutal numbers have Santorum and his team running like a frustrated challenger:

Advisers to Santorum concede they are growing increasingly frustrated by his weak support and the tactics of state Treasurer Robert P. Casey Jr., his likely Democratic opponent.

Some analysts and party officials say Santorum's campaign tactics, such as calling for 10 debates a year before the election, are bordering on desperate, particularly for a two-term incumbent.

"I think there is a certain frustration on my level," said John Brabender, Santorum's longtime adviser and media consultant.

"Every day I have to hear Bobby Casey's criticizing without saying what alternative he would offer," he said. "At least be man enough to offer solutions as well or stand on the same stages."

At some point well down the road Casey will have to engage, but until that time comes he's going to keep his distance and let Santorum stew.  It's going to take a perfectly executed plan, a bit of luck, and perhaps some help from his opponent for Santorum to have a chance to pull this one out.