The role of the Jewish vote in US elections is greatly exaggerated imo.
Most American Jews are far more liberal and left-wing than the general population. I can't imagine that the US government giving a carte blanche to the very right-wing Zionists in Israel particularly appeals to them, or that they would necessarily back US politicians with that agenda.
Why Jewish Americans vote Democratic
49% of Jewish adults identify as liberal, compared with just 19% who say they are conservative. That's nearly a mirror-opposite of the general public
72% of Jews say Muslims in America are discriminated against, versus just 47% of the public at large who say that.
only 43% of Jews believe that caring about Israel is an essential part of being Jewish.
Furthermore the Jewish population in the US is actually quite small, about 98% of the Americans aren't Jewish, add to that the fact that there are 2.6 million Muslims in the US and you start getting the feeling that the Jewish vote doesn't quite swing elections in the way some think it does. It's just a small rather stable vote.
IMO US government support for Israel has more to do with geopolitics than the Jewish vote/lobby. People forget that the US hasn't always been Israel's closet ally, up until the late 1960's France was Israel's main arms supplier and had much closer political ties with it than the US.
In those days Texan oil provided much of the US's oil needs and the Middle East wasn't quite as important in that respect. The US actually sometimes took a pretty hostile attitude towards Israel as happened over Suez.
Things changed as France's ending of its colonial wars meant it shared less of a common enemy with Israel with regards to Arab nationalism, and Israel lurched more to the right with expansionist policies, and the US gradually saw its all important "vital US interests" develop in the region.
The US needs a strong dependable ally in a volatile region where God buried the United States's oil. It has that in the form of the world's fourth military power Israel. And that imo lies at the heart of the US's support for Israel, not the Jewish vote.
Although the heavy financial price that the US pays for its client state, and what it gets back in return, far from guarantees that benefits won't be reassessed and reevaluated in the future. As US global influence slowly wanes, as does its share of the world's wealth, I think that's more than likely.