There are less than 2 weeks left before the primary in Connecticut. I feel very confident that Lieberman will lose the primary, despite the support of Bill Clinton. That support came a little too late for Lieberman.
There are many reasons for which Lieberman should not be re-elected, but his position on Iraq alone is more than enough. As we all know, Lieberman continues to support the Bush administration on Iraq and he is doing so in a very arrogant manner. That shows that he can not learn from his mistakes and that he will keep repeating them in the future.
Clinton's support is not surprising. It is a political move to advance the case for Hillary in 2008, by demonstrating to conservatives, independents and republicans that he (and his wife) are in the "center" and that she (they) deserve (s) their votes in 2008. I dont believe that Clinton really cares about Lieberman. He only cares about Hillary's political career.