He campaigned with McCain. In fact McCain was one of his best friends outside of work.
Leiberman was instrumental in stopping Democrats from creating a real health care bill.
An Independent is not a Democrat. But an Independent that stopped the Democrat's highest goal and aspiration for the last 40 years is most certainly NOT.
Additionally, Leiberman was pro Iraq, pro war, pro making Georgia a member of NATO and risking all out war with Russia... the list goes on.
He was no friend to Democrats.
I do agree with you that Obama is a disappointment though. He has no spine and refuses to stand up for himself or stand up to Republicans. If he backs down in the slightest way to the new round of Republican threats to harm the country, I will completely turn on the man.