sigridsmith has posted a great diary on myleftnutmeg on how we've managed to have a terrible senator like Lieberman for the past 18 years.  It traces the background of Lieberman's four Senate runs, starting from 1988 where Lieberman ran against Weicker from the right, through the 1994 election where the GOP put its effort into the CT-Gov campaign of John Rowland instead of the Senate race, only to have Rowland resign and go to jail for corruption, through Lieberman's 2000 run against Phil Giordano (who is now in prison for a sex crime involving a minor) while concurrently running for VP (which if successful would have led to the CT-Sen seat being handed to a Republican).  Finally, it describes the legislative accident that let Lieberman file petitions for an independent run in 2006 after losing the Dem primary.

With sigridsmith's permission I'm posting the entire diary here below the fold.  It's one of the better diaries I've seen in a while and it's worth reading the whole thing.