Thirty-seven percent (37%) of likely Democratic Primary Voters in Pennsylvania are not sure how they will vote when it comes time to select a Democratic Party nominee for governor in 2010.

The latest Rasmussen Reports telephone survey finds that another 10% would prefer someone other than the candidates currently in the mix meaning that nearly half the voters have no current preference. But then the May 18 primary is still seven months away.

In this wide open setting, Allegheny County Executive Dan Onorato attracts 19% of the vote, while state Auditor Jack Wagner is the choice for 14%. Former Congressman Joe Hoeffel is preferred by 11%. Two other candidates pick up single digit support: Scranton Mayor Chris Doherty at six percent (6%) and businessman Tom Knox with four percent (4%).

Even among Democratic Primary voters, the candidates are generally unknown. Onorato earns Very Favorable reviews from 14% while none of the other candidates reach double digits. Between 42% and 49% don’t have even a soft opinion of each candidate.

This may partly be due to the more visible battle for the state’s Democratic Senate nomination. Incumbent Arlen Specter, a former Republican, leads Congressman Joe Sestak by just four percentage points. In a look at general election match-ups against Republican hopeful Pat Toomey, both Democrats are competitive, but Sestak performs a bit better in the polls at this time.

Pennsylvania's Democratic Governor Edward Rendell is term-limited and therefore cannot seek reelection.

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