Pennsylvania Gov. Tom Corbett's approval ratings have hit an all-time low, according to a new Quinnipiac University poll.

The poll, released Wednesday, shows a negative 36 percent-to-53 percent approval rating for the embattled Republican governor. Fifty-six percent say Corbett doesn't deserve re-election.

"Pennsylvania voters deliver a big bag of coal to Gov. Tom Corbett and directions to the State House exit as he heads into the holidays with the worst net approval rating he has ever had," said Tim Malloy, assistant director of the Quinnipiac University Polling Institute.

More bad news for the Republican governor is the widening gender gap. According to the poll, Corbett's positive/negative grades are 31 percent to 58 percent from women, 35 percent to 53 percent from independent voters and 42 percent to 47 percent marks from men.

Corbett also has ground to make up against potential Democratic challengers. The poll shows Corbett trailing Rep. Allyson Schwartz 37 percent to 45 percent. His largest deficit comes against former State Auditor General Jack Wagner, trailing 36 percent to 48 percent. Corbett trails all possible Democratic challengers except former State Public Utility Commissioner John Hanger.

"These numbers represent the millions of dollars that have been spent by liberal special interest groups distorting the facts on the air these past three years and in 2014 the governor will be telling the real story of Pennsylvania moving forward," Corbett campaign manager Mike Barley said in a statement.

The Quinnipiac poll released Wednesday echoes a Public Policy Polling poll released in November that showed Corbett clinging to a 24 percent approval rating.