Andrew Romanoff's U.S. Senate campaign has added a few big guns to its arsenal in its attempt to take down Senator Michael Bennet in a Democratic primary later this year. Among the new recruits is Joe Trippi, the man who ran Howard Dean's insurgent presidential campaign. "Bennet got appointed and thinks nobody should run against him. I mean, give me a break," Trippi tells Politico. Expect the Romanoff team to repeatedly frame their candidate as an independent Democrat, one who will "challenge the status quo, shake things up in Washington, and make it work for people, not the special interests," Trippi adds in a campaign news release. Pat Caddell---who has been involved in six presidential campaigns, starting with George McGovern's in 1972, and served as a personal adviser to President Jimmy Carter---has also joined the Romanoff team. Caddell has been a writer, producer, and consultant to numerous hit films and TV shows, including The West Wing. Romanoff (left) has resisted money from political-action committees, while Bennet (right) reports receiving more than $600,000 in such contributions last year---a contrast between the candidates, notes The Colorado Statesman. But The Washington Post characterizes Bennet as a "winner" when it comes to fundraising, ending the year with $3.5 million in the bank. Meanwhile, Dick Wadhams, the chairman of the Colorado GOP, aims to make President Barack Obama's visit on behalf of Bennet later this month as difficult as possible, harping on Obama's signing of the stimulus bill, writes Politico.