CNN data guru Harry Enten broke down the latest polling in the Democratic Party on views toward Israel and the Palestinians on Wednesday and marveled at the massive shift in attitudes, declaring he’s “rarely” seen anything like it in his many years of looking at polling data.

Enten spoke to anchor Kate Bolduan in the context of Zohran Mamdani’s sweeping victory over ex-Gov. Andrew Cuomo in New York City’s Democratic Party mayoral primary last week.

“What are we talking about here? All right, who do Democrats sympathize more with: Israelis or Palestinians? In 2017, the Democratic Party was a pro-Israeli party. Look at this. They sympathized with the Israelis by 13 points—more with the Israelis than the Palestinians. But look at this sea change. Now, Democrats sympathize more with the Palestinians by 43 points.Oh my God! That is a change in the margin of 56 points over the course of just eight years. So all of a sudden, it’s the pro-Palestinian position that actually reigns supreme in Democratic politics, not the Israeli position. And that is part of the reason why Mamdani was able to do so well in this primary, because those attacks over Israel, simply put, did not ring true for Democrats”