A PAC mailer circulating this week hit both Wiener and Chan on their positions related to Israel, according to reporting from MissionLocal. The mailer adds outside-money pressure to a primary field that already includes Saikat Chakrabarti.

Pelosi's endorsement of Chan drew immediate attention for its framing. The former speaker cited Chan's identity as a mother as part of her rationale — a line that landed poorly with many San Francisco voters online, given that Chakrabarti is also a parent and was not mentioned in those terms.

Wiener announced his congressional run without coordinating with Pelosi, who had previously been expected to play a role in shaping the successor field for the seat. Pelosi's daughter had been mentioned in earlier speculation about the race. Pelosi has not publicly addressed those circumstances.

The Reddit thread accompanying a campaign ad — in which Chan appeared to have replaced an image of Pelosi with another figure after the endorsement did not materialize from that direction — drew hundreds of upvotes and blunt commentary questioning Pelosi's stated reasoning.

None of the campaigns responded to requests for comment in time for publication.

The primary is the next hard date on this race. Watch for whether additional institutional endorsements break toward Chan or Wiener in the coming weeks, and whether the PAC behind the Israel-focused mailer discloses its donors on schedule with state filing deadlines.