But in the two years since then, Schumer has thrown his weight behind a plan to cancel student loan debt by executive order. He’s voted against the United States-Mexico-Canada Agreement. He’s said “nothing is off the table” when it comes to eliminating the filibuster. And that’s only a fraction of the progressive moves he’s made in recent years. It still hasn’t inoculated him from the possibility of a primary.

“It’s exciting to see how much action Schumer is currently taking,” said Saikat Chakrabarti, Ocasio-Cortez’s former chief of staff. “And I hope that progressives continue pressuring him, threatening a potential primary.”…

“It’s dependent on what Schumer does,” said Waleed Shahid, communications director for Justice Democrats, the left-wing group that recruited Ocasio-Cortez to run for Congress, referring to a challenge by her or another progressive candidate. “Schumer will have to explain every one of his decisions to one of the most progressive primary electorates in the country, and if voters think he’s capitulating to Mitch McConnell and not organizing his caucus to deliver for working families, then he’s going to be in some trouble.”