The Illinois Democrat plans to appeal to voters to believe his message of change.
The New Hampshire ad repeats his message that went up last week in Iowa. In the new ads, Obama asks viewers to support his candidacy, plays up his un-Washington experience and tries to allay concerns about his relative lack of experience.
His ad also takes a shot at Democratic front-runner Hillary Rodham Clinton, who voted to authorize the unpopular war in Iraq but has refused to recant that decision. Obama says that he "defied the politics of the moment and opposed the war in Iraq before it began."