They don't shift policies, they shift marketing. They will continue to support Israel because they are treating you with Trump and you have to vote for them whatever they do. So change is never going to happen.
Either vote third party or don't waste your time voting. You are getting nothing better with democrats. Trump is a candidate that was placed there by the democrats so they can have a better chance in the elections. In next elections they will simply move the goal post and get someone even worse for Republican party and whatever you are voting against in these elections will be the democrat position in the next one.