Should both Republican Pat Toomey and Democratic Sen. Arlen Specter win their respective primaries on May 18, Toomey would have a 7-point advantage heading into the November general election matchup in Pennsylvania, a new Morning Call/Muhlenberg College poll finds (March 29-April 7, 402 LV, MoE +/- 5%).

Matched up against Rep. Joe Sestak (D-Pa.), Toomey leads by 11 points but receives just 33% suppport. Like Sestak, Toomey is a former congressman and the result shows that much of the state still knows little about either.

Obama's approval rating is just 45%, and Republicans hold a 41%-40% edge in the generic congressional ballo test.

Toomey 47
Specter 40
Und 9

Toomey 33
Sestak 22
Und 34

In the governor's race, Attorney General Tom Corbett (R) holds big leads over the top Democratic candidates -- Dan Onorato, Jack Wagner and Joe Hoeffel -- all of whom still are mostly unknown statewide.

Corbett 42 - Onorato 18 - Und 40

Corbett 44 - Wagner 16 - Und 49

Corbett 45 - Hoeffel 11 - Und 44

--------------------------------------------
Follow the RCP Blog on Twitter.
Become a fan of RCP on Facebook.
--------------------------------------------