Last month, 28-year-old Alexandria Ocasio-Cortez upset highly regarded Democrat Joe Crowley – considered number 4 in the Democratic Party and a staunch supporter of Israel – to win the Democratic primary for US Congress in New York's Queens district. This surprising victory shows the growing strength of the leftist-socialist-progressive wing of the Democratic Party – a wing that supports anti-Israeli positions and advocates the removal of members of the party's moderate liberal wing. Israel must prepare for the day when the leftist-socialist-progressive wing gains hegemony, first in the Democratic Party (which now seems almost certain) and then perhaps in the US Congress and the presidency.