Attorney General Tom Corbett (R) is the most well known of the candidates looking to replace the term-limited Gov. Ed Rendell (D), and therefore leads his potential opponents by wide margins, a new Quinnipiac survey finds (Sept. 21-28, 1100 RV, MoE +/- 3%).

Corbett leads Rep. Jim Gerlach (R-Pa.), who represents a district northwest of Philadelphia, by a 42%-13% margin among Republicans, with 43% undecided.

Among the Democrats, Allegheny County Executive Dan Onorato leads with 14%, followed by Montgomery Co. Commissioner Joe Hoeffel (the 2004 Senate nominee) at 12%, State Auditor General Jack Wagner at 11%, Scranton Mayor Chris Doherty at 8% and businessman Tom Knox at 5%. Forty-six percent remain undecided.

"The Democratic race for Governor is wide open," said Quinnipiac pollster Peter Brown. "The candidates just aren't that visible to most voters and that race is still far, far away from even having a front-runner. The Republicans are another story. Corbett has a large lead and although it is certainly not insurmountable, Congressman Gerlach certainly has his work cut out for him."

General Election Matchups
Corbett 47 - Onorato 28 - Und 24

Corbett 44 - Wagner 29 - Und 25