If lawmakers vote "no, your taxes go up. Yes, you get a tax cut," Obama told the crowd. "Which way do you think Congress should vote?"

"Don't be a Grinch. Don't vote to raise taxes on working Americans during the holidays," he said during his speech at a Manchester high school.

Democrats had hoped to tuck the payroll tax extension, as well as a renewal of jobless benefits, into an agreement from the congressional deficit-reduction supercommittee. But with that option off the table following the committee's collapse Monday, the White House plans to make a full-court press for a separate measure to extend the tax cuts before they expire at the end of the year — and set up Republicans as scapegoats if that doesn't happen.

Much of Obama's stop in Manchester was about trying to gain a foothold for his economic message in New Hampshire to balance the anti-Obama rhetoric from the Republican candidates swarming the state ahead of the Jan. 10 presidential primary. Obama's trip came on the same day that the GOP contenders were gathering in Washington for a foreign policy debate sure to focus on what they see as the president's failings.

Obama came face to face with the frustration of some New Hampshire voters, who are fed up with a local economy that is struggling to grow and increasingly unhappy with the president's leadership.

A group of protesters outside Manchester Central High School carried signs that read "Obama Isn't Working." And the president's speech was interrupted by a handful of people venting the frustrations of the Occupy Wall Street movement that has spread across to a number of cities.

Even some Obama supporters have sensed a shift in the state.

Naomi Preble, 62, backed Obama in the 2008 election, and the independent voter plans to vote for him again. But she said young people in New Hampshire have soured on the president.

"I think they're worried," Preble. "They don't see the strong leader they thought they elected."

Romney used Obama's trip as an opportunity to air his first 2012 television ads in the Granite State, and they were sharply critical of Obama's economic record. He also ran ads in New Hampshire newspapers that said to Obama, "I will be blunt. Your policies have failed."

Obama never mentioned his GOP challengers by name during his two-and-a-half-hour stop in New Hampshire, making only a veiled reference to their constant presence in this swing state.

"The next time you hear one of these folks from the other side coming and talking about raising your taxes, you just remind them that ever since I've gotten into office, I've lowered your taxes, haven't raised them," he said.

While the White House insisted the president's stop was not about politics, the trip had a campaign feel, from the packed high school gymnasium where Obama spoke to the local restaurant where he dropped by to have lunch with a New Hampshire family.

Obama's campaign believes he can re-ignite voters' passion as they see more of him. His surrogates, including Vice President Joe Biden, will also be making frequent trips to New Hampshire.

The key for the campaign will be bringing New Hampshire independent voters back to the Democratic Party before next November's election.

Independents helped Republicans sweep the state's congressional elections and win veto-proof majorities in both chambers of the state Legislature. It was a dramatic shift for a state many believed had been shifting to the left over the past decade.

Billy Shaheen, a longtime Democratic operative in New Hampshire and the husband of Sen. Jeanne Shaheen, said Republicans' huge gains in the state in 2010 served as a wake-up call.

"After the 2010 election, New Hampshire got a taste of what the tea party can do, and it's not happy," he said. "We let our guard down in 2010."

The White House sees a year-end debate over extending payroll tax cuts, as well as renewing jobless benefits, as an opportunity to draw a distinction for voters between the president's priorities and those of Republicans. Economists have warned that letting both programs expire could be harmful to an economy still struggling to recover from recession.

Last year's cut in the 6.2 percent payroll tax, which raises money for Social Security, was accomplished with borrowed money. This time around, administration officials say the president may not insist on the cuts being paid for immediately.

The 2 percentage-point cut in the 6.2 percent payroll tax gave 121 million families a tax reduction averaging $934 last year at a total cost of about $120 billion, according to the Tax Policy Center.

Obama also wants to cut the payroll tax by another percentage point for workers and cut the employer share of the tax in half as well for most companies.

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