Lamont was the Soros candidate--it would be very bad for him to be in the Senate. However, it was also very bad for the pro-Israel Jew to get kicked out of the Democrat party--I can remember when to be anti-Israel (or just not pro-Israel) was political poison, and there was all kinds of shocking antisemitism in Lamont's primary campaign.
What I'm curious to see is if Lieberman goes anti-Israel (starts talking about those terrible Zionists) when he's back in the Senate. He's a pretty cynical guy, and he must know the tide has turned against Israel.