Quick thought: Reid's payoff for having Lieberman in the party is
n(v)-c where:
n= frequency he votes with the party from 0 to 1
v= value of Lieberman's votes
c= opportunity cost of giving the Homeland Security committee chairmanship to someone else.
As the Democrats approach 60,
v increases. At the same time
c might be rather small because it is good for the Democrats to have a hawk chairing HS. If
v is high and
c is low,
n can dip and Lieberman will keep his chairmanship.*
I was wrong. He's not nuts. And he
gets money from the insurance industry.
* We had a separate argument in the department about the utility Lieberman reaps by keeping his chairmanship. I don't think he needs it as much as others do, and even if he did, he seems to benefit by signaling that he will defect.