So, they can still, but the point of the article is that it's becoming less and less true over time. AIPAC seems to have picked on the weakest candidates and not made an attempt to challenge some of their most vocal critics.
The American electorate is still fine with genocide, but the minority that doesn't like it is steadily growing and has become bigger than I think a lot of old-school political people realize.
I have absolutely no idea why you keep insisting that I like genocide (or Israel buying candidates?). It makes it pointless to talk to you because you are attacking points of view that have nothing to do with what I think. I just don't want to have an extensive argument about what it is that I believe with someone telling me, no, you don't, you believe this other thing instead. That's the reason I have generally given up on talking to you; I'm not sure what I was thinking just now. Mostly I was just trying to help you understand this article.
You asked a perfectly fair question though which I will answer -- here's a poll about the Americans' feelings about the war. How you ask the questions and what questions you ask and how you tee them up make a pretty significant difference to what people say, but that one seems pretty honestly organized and comprehensive, and they're transparent about what exactly they asked. 34% say the way Israel is fighting the "war" is unacceptable, 38% say it's acceptable, 26% say they're not sure.
I think that attitude is because they're profoundly confused about what is happening in Gaza because of our atrocious media, not that 38% of Americans understand that it's a genocide and want Israel to be doing that. I only summarized as "fine with genocide" because I thought they were fine with aid to Israel (which a lot of them don't understand the implications of)... I have now learned from reading this that they don't. The little four-quadrants chart shows that if you limit it to people who say "yes" or "no" about military aid to Israel, you get 64% "no." Holy shit. That's way higher than I thought.