Update: There is an earlier and more comprehensive diary here.
Here is a list of Lieberman's Senate Commmitte memberships.
Please contact your local friendly neighborhood Democratic Senator and possibly this guy and possibly this other guy why valuable Senate Committee seats (like the powerful Armed Services Committee) are being given to someone who is running against the Democratic candidate for Senate?
If Democrats aren't able to use Committee memberships as a lever of influence, why even bother having a party?