PA Indies are still sticking with Christie over Clinton.
That's odd ...
Christie is a very good cultural match for Pennsylvania. The others are severe non-matches. Santorum may have been one of the rising stars in the GOP -- until he abused power in the Senate.
It could be that the 'bridge scandal' in New Jersey isn't as troublesome in Pennsylvania as in New Jersey. New Jersey and Pennsylvania have many toll bridges between them, but those bridges heavily traveled couldn't be manipulated as blatantly on the Pennsylvania side. The heavily-traveled ones are in greater Philly; the others have nowhere the traffic of the great bridges connecting New Jersey to Philadelphia or New York City.