Hotline "On Call" Blog's Take

They essentially say that the net impact of the debate will likely favor Lieberman - and pretty strongly.

http://hotlineblog.nationaljournal.com/archives/2006/07/the_morning_after.html

Mercurio says there are 3 issues that Lamont "handed" to Lieberman:
1) High gas prices
2) Congressional earmarks (Lamont blatantly took both sides on the issue)
3) Failing to answer Joe's question on tax returns and wasting his own chance to ask a question of Lieberman

These issues "will play well with the more practical, less dovish workaday Dems who live far from Greenwich and who have kept Lieberman in office for decades." Mercurio's words, not mine.