Corzine has caught up after months of trailing Christie. Just last month, Christie was leading by 5 points.
The poll also indicates possible momentum building for an independent, Chris Daggett who now holds 4 percent. 5% of voters remain undecided.
Democrat Jon Corzine spent part of his day speaking to children's advocates in Trenton. The tightening of the governor's race is good news for the incumbent, who faced with a bad economy ,continuing state budget problems and blistering attacks from his opponent.
"I believe we've begun to establish dramatic contrasts between the candidates," said Gov. Corzine. "I believe the only poll that matters is the one that happens on November 3rd."
Corzine has spent millions in TV ads attacking Chris Christie for, among other things, failing to provide specifics about how he'd cut taxes and the budget.
After picking up an endorsement from environmental groups at the statehouse, Christie was unphased by his vanishing lead and was ready to keep fighting.
"I've got to tell you, I should be dead and buried by now given what he's done, and I'm not. That's bad news for him. He wants to fight in the last four weeks? He's going to get it," Christie said.
After what's been called a standout performance in last week's debate, independent Chris Daggett is getting notice as a viable alternative to the big party candidates. When his name was mentioned to polltakers along with Corzine and Christie--Corzine leads Christie 38%-37% and Daggett gets 17% of the vote. Though the effect is similar when another independent candidate's name is read.
"This thing can change in a heartbeat because the support for both those candidates is very soft," Daggett said. "It starts to get people to say, 'Hey, wait a second. This may be possible.'"
Election day is November 3rd.