AIPAC and centrist Democrats lost big in Pennsylvania primaries, a setback for pro-Israel money in Democratic politics.

• Chris Rabb, a Democratic socialist, won a Philadelphia primary with 45%, beating AIPAC-backed Ala Stanford and Sharief Street.
• AIPAC funneled over $3 million through a group called 314 Action to back Stanford, while still denying involvement.
• Stanford's campaign fell apart after she fumbled a simple Fox News question about who should enforce immigration laws.
• A new pro-Palestine PAC called American Priorities, funded with $10 million from Muslim donors, spent $500,000 to help Rabb.
• Bob Brooks, a firefighter union leader, also won in the Lehigh Valley despite Republicans spending over $1 million against him.

Outlook: Pro-Palestine and progressive money is starting to match AIPAC in Democratic primaries, with Abdul El-Sayed now leading in Michigan after similar attacks backfired.