CUYAHOGA FALLS, Ohio - Mitt Romney tonight unveiled a new rallying cry, getting a crowd of thousands here this evening to begin chanting "Four more weeks! Four more weeks!" as the Republican presidential candidate tried to build support in the crucial swing state.

"I've been watching some of the - President Obama's rallies - and they chant 'four more years, four more years,'" Romney said. "And today there are 28 days before the election. I think the right chant ought to be for them, 'Four more weeks, Four more weeks!'"

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"I know there's greater and greater interest in this campaign across the country," Romney said. "The fact that, I don't know, 10,000 people or more are here this evening is a testament to how much people care about this election. I know people are focusing on how the country's going to be led going forward and I think that's in part because people are facing some tough times."

Romney continued to tweak Obama on the attention he's paid to Big Bird, whom Romney for months has used in a campaign line when citing cuts to PBS as part of his budget plan.

"A time like this for the president to get up and say, as he has over these last several days, that he's focused on saving Big Bird is, kind of a strange thing in my view, because you see I'm focused on getting the American people good jobs and brighter prospects," Romney said.

Romney, who will spend three more days this week alone in the Buckeye State, was accompanied by Ohio Sen. Rob Portman, whom Romney has recruited to stand in as Obama during debate prep, and the always outspoken governor of New Jersey, Chris Christie.

Christie, taking the microphone ahead of Romney, was much more frank in his desire to replace Obama, suggesting that a plane ticket to Chicago is in his future.

"The president of the United Sates said you can't change Washington from the inside," Christie said. "That's what he said, he said it himself. And I feel badly for the president.

"Maybe he's still a little tired form last Wednesday night," Christie said, referring to last week's presidential debate. "Maybe he's just a little disoriented when he said, it but let me remind, because I want to help the president and I'm sure because he loves me, I'm sure he's out there listening.

"Mr. President, you have lived inside 1600 Pennsylvania Avenue for four years if you can't change Washington from inside the White House then let's get you the ticket back to Chicago you've earned," said Christie, then turning the crowd over to Romney. "There's one man who is going to make sure that ticket gets punched on November 6th!"

A new CNN poll out this evening found Romney tightening the race in Ohio, with Obama holding a 51-47 percent lead on Romney, a smaller gap than the last poll, which had them seven to 10 points apart.

Romney is scheduled to remain in the state Wednesday, holding three campaign events, including one town hall.