CHICAGO — In a significant upset, Evanston Mayor Daniel Biss has clinched victory in the Democratic primary to fill the seat of retiring Rep. Jan Schakowsky, signaling a potential shift in the influence of the American Israel Public Affairs Committee (AIPAC) within Democratic ranks. Biss, a figure with deep personal and familial ties to Israel, overcame a fierce campaign marred by heavy external political attack ads.

Biss, whose lineage includes Israeli heritage and Holocaust survivors, has been an outspoken critic of Israel’s military actions in Gaza, drawing considerable opposition from AIPAC-aligned groups. Despite this, he managed to outpace a competitive roster of candidates, including Kat Abughazaleh, a Palestinian American social media influencer and vocal critic of Israel, and state Senator Laura Fine, who was the preferred choice of AIPAC.

Notably, the district, which boasts a substantial Jewish population exceeding 10 percent, has been represented by a Jewish Congress member for over six decades. AIPAC's involvement in this race was marked by an expenditure exceeding $5 million on advertisements intended to bolster Fine and undermine Biss. In a strategic pivot late in the campaign, these efforts were rechanneled toward dividing the progressive vote, which ultimately did not deter Biss's momentum.

Endorsed by J Street, a more liberal pro-Israel organization, Biss openly criticized AIPAC’s tactics in Democratic primaries, which resonated with many voters looking for autonomy in their electoral choices. His extensive political and academic background as a former University of Chicago math professor and state legislator, coupled with his endorsement by Schakowsky, fortified his campaign against the adversarial political climate.

Biss's platform extended beyond international politics, focusing on domestic issues like increasing federal investment in affordable housing, expanding Social Security benefits, and advocating for ethical reforms such as banning stock trading by Congress members. His active engagement in local and national activism, including confrontations with ICE agents, underscored his commitment to progressive values and direct action.

The primary results not only forecast a likely win for Biss in the upcoming general election but also suggest a reevaluation of external influences on party dynamics, particularly in districts with significant ideological diversity. As the Democratic Party continues to grapple with its stance on Israel and broader foreign policy issues, Biss’s victory represents a nuanced endorsement of candidates who are willing to challenge the status quo and advocate for a broad spectrum of progressive policies.