The danger is real. Sanders & Warren are the most anti-Zionist Democratic candidates ever, it seems. (President Carter only became openly hostile against Israel after his term in office. The Bushes pretended to be friends.)
President Trump’s behavior has been questionable across the board but on support for Israel he is a world champion. It seems that the Democratic-Socialist duo would create the opposite record: on the one hand, a real service to the lands that went straight from slavery to capitalism (with no notion that workers are not upgraded slaves or human resource but rather people) but with an open unprecedented hostility towards Israel.
More likely, though, if the Democratic ticket would be Sanders, Warren or both, would be that Trump wins again since the American People will not elect an openly anti-Zionistic president. (At election time, Carter and the Bushes never let on that they were anti-Israel.) Trump would successfully portray them as hostile to Israel and ‘therefore’ hostile to the US.
Israel is also not longing for Obama III, e.g. Biden as president. We remember UNSR 2334 when his hatred against Israel became crystal clear. So, maybe a reference to him should be made too. And too many negative reports about Buttigieg and Booker already. Who’s left? Andrew Yang!!
Still, anti-Israel candidates are leading the pack and the danger is palpable.