TRENTON, N.J. (AP) - After a surge of new speculation, New Jersey Gov. Chris Christie declared with finality Tuesday that "now is not my time" to run for president, dashing the hopes of Republicans still searching for someone other than front-runners Mitt Romney and Rick Perry.
Christie had insisted for months he wouldn't run. But then came an intense weekend of reconsideration before he made a firm announcement at a news conference at the New Jersey Statehouse. His decision means the campaign now basically belongs to Romney and Perry, battling to take on President Barack Obama three months before the first GOP voting.
Though both men have extensive party support, Romney, the former Massachusetts governor, has failed to win over some skeptical conservatives, and Perry, the Texas governor, has been falling in opinion polls as quickly as he had risen.
Christie was the latest, perhaps last, hope of some establishment Republicans who had already been rejected by Indiana Gov. Mitch Daniels, Mississippi Gov. Haley Barbour, former Florida Gov. Jeb Bush, Wisconsin Rep. Paul Ryan and others who declined to run for president in 2012. He's been governor of New Jersey for less than two years, but he's cut the budget, curtailed public sector unions, and dealt with a Democratic legislature with disarming and combative confidence.
Christie disputed the idea his name was just one more on that list.
"They weren't searching. They came right to one target, and it was me," he said Tuesday. "And it has always been me."
But he said he was sure, "Now is not my time."
There are still other potential challengers. Former Utah Gov. Jon Huntsman is showing some promise in New Hampshire; former Pennsylvania Sen. Rick Santorum has support from social conservatives in Iowa and former Godfather's Pizza CEO Herman Cain is rising in national polls. Former Alaska Gov. Sarah Palin still hasn't said whether she'll run.
But Christie's announcement leaves Perry and Romney as the two Republicans who have the profile, campaign organization, fundraising prowess and early-state promise for a serious run at the nomination.
Within hours, Christie donors started picking sides. The Romney campaign said Ken Langone, the Home Depot financier who helped lead the push to get Christie to run, had jumped on board. Iowa businessman Gary Kirke, who met with Christie earlier this year to urge him to run, announced he would support Perry.
Both Romney and Perry will be pushing for the support of Christie himself, who now could become something of a 2012 GOP kingmaker. He declined to endorse a presidential candidate on Tuesday, but he promised his backing would mean something if and when he does.
"I'm not a halfway kind of guy," Christie said.
His support could help give Romney credibility among the tea party conservatives who haven't fully embraced the Massachusetts governor. And it could give Perry a way to quiet concerns about his viability.
Whoever wins, Christie said he wasn't seeking the job of vice president.
"I just don't think I have the personality to be asked," he said. "I'm not looking for that job."