A new poll in Pennsylvania shows more Republicans may want Gov. Tom Corbett (R) to step aside rather than run for another term next year.

Forty-four percent in the Franklin and Marshall College poll said Corbett should not run again, while 42 percent said he should run again -- a difference that is within the margin of error.

Corbett finds himself perhaps the most vulnerable governor in the country thanks to a low approval rating and a slew of Democrats anxious to run against him. Those Democrats include state Treasurer Rob McCord and Rep. Alyson Schwartz, among others.

The new poll shows just 19 percent of Pennsylvanians believe the former state attorney general has done a "good" or "excellent" job.

Despite his apparent vulnerability in a primary and the emerging conventional wisdom that Republicans would be better suited with a different nominee in the general election, no well-known primary challengers have stepped forward to this point.

Montgomery County Commissioner Bruce Castor had considered a primary challenge, but opted not to run earlier this year.