Will Jews Abandon The Democratic Party?

After House Democrats, under pressure from their radical left wing, voted to remove Israel's defensive Iron Dome funding from its budget, a Christian friend messaged me, saying, "Overwhelming Jewish support for the Democratic party is hard to comprehend." Given the fact that the Democratic Party has been less and less friendly to Israel in recent years, and given former President Obama's icy relationship with former Prime Minister Netanyahu, what explains the deep solidarity between Democrats and Jews?