It's a 17% difference now. I'm honestly skeptical that AIPAC money is the big cause here. It seems like he had a lot of other issues that contributed to his loss. I was reading earlier that he didn't really communicate or interface with his constituents much, while Latimer was a much bigger community presence.
This is a trend I've noticed actually. A lot of people who do take morally correct positions like to let their positions speak for themselves and not do as much communication or outside engagement. They want to let their moral high ground do the talking. And while their positions are laudable, their core job is to represent their constituents. If they ignore that, a loss isn't surprising.