It can be difficult, but many politicians are now running on explicitly anti-AIPAC and anti-Zionist campaigns.

An example of this. Politicians are still politicians, and what a politician DOES is far more important than what one says.

https://www.aza-pac.com/our-candidates

That being said, Zionism has become political poison. Even with massive funding, pro-Israel and Zionist candidates are losing left and right.