The poll released Tuesday found Wolf leading Corbett by 25 points. PPP found Wolf with 55 percent support to Corbett with 30 percent support. That's an increase from the 12-point lead Wolf had when PPP surveyed a matchup against Corbett in November.
The poll also found that Corbett continued to suffer from serious unpopularity. Just 27 percent of voters said they approve of the job he is doing while 58 percent said they disapprove.
Meanwhile, Wolf's net favorability is in double digits. The poll found 47 percent of voters had a favorable view of Wolf while just 20 percent had an unfavorable opinion.
The PPP poll followed one over the weekend by Rasmussen Reports which found Wolf leading Corbett 51 percent to 31 percent among likely Pennsylvania voters.
The PPP poll surveyed 835 registered voters from May 30 to June 1. It had a margin of error of plus or minus 3.4 percent.