03/18/2010 05:12 am ET Updated May 25, 2011

Top 15 Lieberman Betrayals: Joe's Worst Double-Crosses

On Tuesday, Sen. Joe Lieberman (I-Conn.) announced that he might join a filibuster against health care reform. It's not the first time he's betrayed Democrats. Below, a slideshow of the senator's worst turns. Vote for your favorite!

Biggest Lieberman Betrayals

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