Thanks to Glenn Greenwald for providing the information on this action alert.
Republican-in-Spirit Joe LIEberman has supported Republican dictators and right-wing policies for some years now. In 2006, after losing a primary election to challenger Ned Lamont, LIEberman told Connnecticut voters that their will was irrelevant; he would run for re-election as an independent. Lamont made a series of missteps afterward, losing out to his extreme right-wing opponent in the general election. Since then, LIEberman has sided with Republicans on virtually every policy issue and used his caucus status with Senate Democrats to force them to adopt his position on legislation favorable to his Republican masters.
Now that there is an undeniable Democratic majority in the Senate, that political party no longer needs to coddle him by letting him keep the chairmanship of the Homeland Security and Governmental Affairs Committee. According to Greenwald, president-elect Barack Obama is taking the official position of staying the hell out of Senate affairs. This creates the opening we on the left require to pressure the Senate to dump LIEberman.