Some related links, which I should have included in the first place!!
https://www.thenation.com/article/politics/zohran-mamdani-democratic-party-establishment/
https://www.axios.com/2025/06/26/democrats-zohran-mamdani-meltdown-new-york
It's very simple. One of these people blindly supports Israel no matter what it does, up to and including genocide, and the other one doesn't.