Republican Governor Tom Corbett trails his Democratic challenger Tom Wolf by 20 points in Rasmussen Reports’ first look at the Pennsylvania gubernatorial race.

A new statewide telephone survey of Likely Pennsylvania Voters shows Wolf with 51% of the vote to Corbett’s 31%. Four percent (4%) prefer some other candidate in the race, but 14% are still undecided at this point. (To see survey question wording, click here.)

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The survey of 750 Likely Voters in Pennsylvania was conducted on May 27-28, 2014 by Rasmussen Reports. The margin of sampling error is +/- 4 percentage points with a 95% level of confidence. Field work for all Rasmussen Reports surveys is conducted by Pulse Opinion Research, LLC. See methodology.