MORE TUESDAY COVERAGE Candidates tweak message for New Hampshire terrain Candidates charge onto N.H. airwaves Bradley appeals to independent New Hampshire voters Republicans look for spirited contest in N.H. Abortion issue dogs McCain in New Hampshire Caucuses over, presidential candidates flee to New Hampshire Tax issue boosts Forbes coming into New Hampshire Snow keeps Keyes from campaigning in N.H. Ad accuses McCain of working to cover up live POW data

"I believe my compassionate conservative vision can unite America and win the White House," Bush says in the new 30-second spot.

With less than a week until New Hampshire votes, other candidates are rolling out new ads, too, as undecided voters make up their minds.

John McCain sells his military credentials. Steve Forbes trumpets his strong showing in Iowa. And Bill Bradley hammers the importance of health care.

The New Hampshire airwaves will be filled with these ads. Each campaign has reserved at least $250,000 worth of TV time on Manchester and Boston stations, and campaigns could buy more for a final weekend push.

Entrance polls from Monday's Iowa caucuses showed that 29 percent of the people who voted for Bush thought his ability to win was by far his most important quality.

"The ultimate goal is to put a Republican in the White House," said Bush spokeswoman Mindy Tucker. "That is why we remind people that it's important to nominate somebody that has a message that can win."

The Forbes camp dismissed that message.

"The only kind of campaign strategy the Bush campaign has been running is 'we can win,"' said Greg Mueller, a Forbes adviser. But it won't work, he said: "The whole landscape and the political environment has changed as a result of these Iowa caucuses."

The new Forbes ad tries to sell that message, featuring a triumphant Forbes talking to supporters in Iowa Monday night and a newspaper headline announcing his second-place finish.

"This is not a good night for the power brokers in Washington, D.C.," Forbes tells a cheering crowd. "We broke the political rules."

Republican John McCain is also out with a new ad that pushes one of his strongest credentials: military experience.

"There's only one man running for president who knows the military and understands the world," says the ad, which began airing Monday.

The spot, dubbed "Commander," notes McCain's experience as a Navy pilot, prisoner of war and senator.

Media adviser Greg Stevens says the ad is meant to build on earlier spots that emphasized McCain's personal story.

"This is one of our strongest messages of the campaign and we're using it near the end here because it's something that distinguishes John McCain from the rest of the field," Stevens said. "It's time to remind voters in New Hampshire what they like about John McCain -- that he's the adult in the crowd."

Asked about this ad, Bush pointed to support he has among the nation's leaders.

"I think some voters may look at that ad and resent the implication," he told reporters in Merrimack, N.H., on Tuesday. "After all, the nation's governors disagree. They think I can be the person who can lead."

On the Democratic side, Bill Bradley has unveiled three new ads in two days.

On Monday, he began running an endorsement from Niki Tsongas, widow of Paul Tsongas, who won the New Hampshire Democratic primary in 1992.

On Tuesday, Bradley released new radio and TV ads on health care, which has been central to his campaign.

The Iowa entrance polls found that Vice President Gore took 60 percent of votes even among those who said health care is their top issue. But Bradley hopes it will be a different story in New Hampshire, where he is running much closer to the vice president.

In his new TV ad, he recounts the story of a woman who didn't have health insurance when her son got sick. "She had to write out a check and her son looked at her and said, `Mom, I'm sorry. I'm sorry because I got sick,"' Bradley says. "No child in America should have to apologize because they got sick."