Progressive challengers beat establishment Democrats in New York primaries, framed as a win for the party's left wing and a loss for big-money donors.

• Several establishment-backed candidates lost to progressive challengers in New York races.
• Candidates who took large sums from the pro-Israel lobby AIPAC were defeated, including by wide margins.
• Losing candidates blamed anti-semitism, but the winners drew Jewish, Muslim, and Christian votes alike.
• Top Democrats in Congress are reportedly furious that voters rejected their preferred picks.
• The win is cast as a backlash against donor-driven politics and party leadership.

Outlook: Expect more progressive primary challenges against incumbent Democrats heading into the next round of races.