AIPAC-backed spending failed to stop Aisha Wahab from winning the California House seat once held by Eric Swalwell, a setback for the pro-Israel lobby's electoral clout.

• Wahab won despite millions spent against her by AIPAC.
• The seat is Eric Swalwell's old California district.
• It adds to a run of races where heavy AIPAC spending did not decide the outcome.
• Candidates critical of Israel policy are proving harder to defeat with money alone.

Outlook: Expect AIPAC to face more questions about whether its spending still moves Democratic primaries.