HARRISBURG -- Democratic gubernatorial candidate Dan Onorato's campaign declared Tuesday that it is gaining momentum, even as a new poll and the latest campaign finance reports showed Republican Tom Corbett holding the advantage in voter support and money.

A Quinnipiac University survey of likely Pennsylvania voters showed Corbett with a 15-point lead over Onorato — 54 percent to 39 percent. The totals include voters who had not firmly made up their minds but were leaning toward a candidate.

Corbett's campaign reported it had $7.7 million on hand as of Sept. 13, more than double Onorato's $3.4 million, according to summaries of the campaign finance reports they were required to file with the state.

"Enthusiasm and support for Dan Onorato's candidacy continues to grow," said Kevin Kinross, Onorato's campaign manager. "The more voters hear our message, the more they recognize that Dan Onorato is the only candidate with the experience and the plan to reform Harrisburg, turn our economy around and create jobs for Pennsylvania families."

A campaign spokesman for Corbett, the state attorney general, said the poll results underscore the strength of his platform.

"Corbett's message of creating jobs and reducing taxes and state spending is resonating with voters while Onorato's message of more taxes and a continuation Ed Rendell's policies is not," said Corbett spokesman Kevin Harley.

Gov. Ed Rendell is stepping down in January after serving the two consecutive terms allowed by law.