SHAMOKIN DAM - Gov. Tom Corbett shrugged off a new poll showing more than half of the participants disapprove of the job he's done in his first term in office.

The Mercyhurst Center for Applied Politics released results of the poll Monday, which involved 426 registered voters in Erie County.

Just 29 percent approved of his work as governor, and less than that, 25 percent, said they would vote for him compared to 52 percent for a Democratic candidate.

Corbett is seeking a second four-year term and said election results are the only poll that truly matters.

"We don't look at polls," Corbett told The News-Item prior to the 2014 Adam Smith Leadership Award Luncheon at Susquehanna Valley Country Club, hosted by EconomicsPennsylvania.

"There's only one poll, that's in November."

But Corbett does have a challenger in next month's primary election, albeit "token opposition" as described by The Associated Press.

The nomination petition of Bob Guzzardi, of Ardmore, is being challenged in state Commonwealth Court and a ruling is expected shortly.

Guzzardi raised $4,500 for his campaign compared more than $9 million for Corbett, the AP reported.

Four Democratic challengers are jockeying to oppose the Republican incumbent in the fall general election: Tom Wolf, an entrepreneur and the state's former revenue secretary during the Rendell administration, Katie McGinty, who had led the Department of Environmental Protection under Rendell, U.S. Rep. Allyson Schwartz and current state Treasurer Rob McCord.

Wolf raised more than $14 million, $10 million donated on his own and includes some loans. Schwartz raised $8 million, McCord more than $7 million and McGinty $3.5 million.

Corbett and the four Democrats have spent millions of their campaign money on political advertisements and the like. The governor said none of them have pulled away from the pack, a finding backed by the Mercyhurst poll. However, a Franklin & Marshall College poll released April 2 showed Wolf had the support of 33 percent of the Democrats surveyed, Schwartz had 7 percent, McCord, 6 percent and McGinty, 4 percent. Almost half of Democratic voters (46 percent) remain undecided, it showed.

"There's four of them out there. They have yet to distinguish themselves from each other," is Corbett's assessment.

Corbett avoided campaign talk during his remarks at the luncheon, at which he introduced friend and Smith Award recipient John D. Moran Jr., president and CEO of Moran Industries Inc.