The thing about the progressive younger generation is that their voting choices have made things progressively worse for themselves in the last 15 years. It's hard to say that the underlying worldview that supplants a anti-Israel position is particularly sustainable domestically long term. To be fair, it's the same thing for foreign policy, the anti-neocons have failed just as bad.

And as for the Right, it's primarily isolationism, but they certainly aren't going to favoring Palestine over Israel anytime. That's already hedged in. At the end of day, it largely goes against of the interests of every actor not aligned with Iran or seeking stability to let Israel fall in favour of Palestine. We do need that hard power when America is retreating from the region.