"The public needs to know that I'm in this for the long haul, that the person who has helped to lead them through the initial crisis wants to help lead them through the rebuilding and restoration of our state," he said at a news briefing in Middletown, where he had come to thank first responders and volunteers.
"It would be wrong for me to leave now," the 50-year-old Republican governor said. "I don't want to leave now. We have a job to do. That job won't be finished by next year."
The gubernatorial election is a year from now. Christie said he made his decision after talking with his family over the weekend. He said his wife and four children, ages 9 to 19, were unanimous in their decision he should run again.
"I have a job to finish that six weeks ago I never anticipated having," he said.
The governor filed papers with election officials Monday cementing his intention to seek a second term. The step allows Christie to set up a campaign headquarters, hire staff and raise money toward his re-election. A formal announcement is expected in January.
Christie carried the Democratic-leaning state by 86,000 votes in 2009, an upset win over Democratic incumbent Jon Corzine.
Christie, who has become a national figure during his first term, is riding an unprecedented wave of popularity because of how he handled the storm, which he said Friday had caused more than $29 billion in damages in New Jersey. Even Democrats have applauded his hands-on response. He appeared on "Saturday Night Live" in his trademark fleece pullover this month to lampoon his own nationally televised storm briefings.
About the only criticism directed his way since Superstorm Sandy attacked the coast in late October has come from fellow Republicans who have lambasted him for embracing President Barack Obama as the two toured New Jersey's ravaged coastline six days before the presidential election. Some even blame Christie for tipping a close election to the president.
Christie was the first governor to endorse Mitt Romney; he raised $18.2 million for the GOP nominee and crisscrossed the country as an in-demand surrogate for Republican candidates. Some are still questioning his party loyalty, however, as they did after Christie delivered the keynote address at the party's nominating convention in Tampa. Critics saw that August speech as too much about Christie and not enough about Romney.
The prospect of Christie seeking a second term became likely after he spurned overtures by Republican bigwigs to enter the 2012 presidential contest and more so when he later ruled himself out as vice presidential material with a resounding "I love the job I have now." Buzz over a Christie 2016 run has become muted since the governor boarded Marine One with Obama.
So far, no one has stepped forward to challenge him as governor. Several Democrats, most prominently Newark Mayor Cory Booker, have been thinking aloud about running for their party's nomination.
Christie said he hadn't spoken to Booker except by text in about 10 days and didn't know the mayor's political intentions.
"My expectation is, Anybody who wants to run is going to run," Christie said. "We only know one person who's running, and that is me. All the rest are going to have to make their own judgments."
Christie's reputation for bluntness and penchant for confrontation have made him a YouTube sensation and sometimes obscured policy changes he has championed.
With the help of Democrats who control both houses of the state Legislature, Christie took on public worker unions, enacting sweeping pension and health benefits changes that cost workers more and are designed to shore up the underfunded public worker retirement and health care systems long term. He also enacted a 2 percent property tax cap with few loopholes to try to slow the annual growth rate of property taxes, already the highest in the nation at an average of $7,519 when adjusted for rebates.
Christie's education reforms have been slower to accomplish, and Democrats have refused to budge on his signature issue for this year, a phased-in 10 percent tax cut. With tax collections underperforming the administration's projections and storm rebuilding threatening to eat further into revenues, Democrats are unlikely to waver on their position that the state can't afford the cut.
Christie's handling of the state's struggling economy, a potential Achilles heel, has taken a back seat to the storm recovery. But unemployment remains a stubborn 9.7 percent, or 1.6 percent above the national jobless rate, and it's too early to tell whether tax collections will rebound to match administration projections for the fiscal year that began in July.