The Democratic primaries held in New York on June 23 may ultimately be remembered as a watershed moment in American politics. While the contests were confined to New York, their implications extend far beyond. The results revealed a significant shift within the Democratic Party, highlighted the growing influence of progressive politics, and underscored the emergence of Muslim and Arab Americans as an increasingly consequential force in public life.

Taken together, these developments suggest that longstanding assumptions about political power, representation, and the limits of debate on Israel and Palestine are beginning to change.

For decades, support for Israel occupied a uniquely protected position in American politics. Candidates who questioned military aid to Israel, criticised Israeli policies or openly championed Palestinian rights often found themselves politically marginalised. Organisations such as AIPAC helped enforce those boundaries through fundraising networks and political influence that shaped electoral outcomes across the country.

The New York primaries suggest that this landscape is evolving.

Several progressive candidates critical of Israel’s war in Gaza and supportive of Palestinian rights prevailed against candidates associated with the Democratic establishment. Their victories reflected a broader shift among Democratic voters, particularly younger Americans whose views on Israel and Palestine differ sharply from those of previous generations.

At the centre of this transformation stands New York City Mayor Zohran Mamdani, who has rapidly emerged as one of the Democratic Party’s most influential rising figures. Through grassroots organising, labour alliances, digital outreach, volunteer mobilisation and allied progressive networks, Mamdani has demonstrated how progressive politics can be translated into electoral power.

The June primaries showcased that influence. Brad Lander defeated Congressman Dan Goldman, one of Congress’s strongest defenders of Israel. Darializa Avila Chevalier unseated veteran Congressman Adriano Espaillat. Claire Valdez won her nomination while advocating a reassessment of US military assistance to Israel. Most symbolically, Palestinian American candidate Aber Kawas won the Democratic primary for a New York State Senate seat, demonstrating that support for Palestinian rights is no longer the political liability it once was.

The common thread behind these victories was not simply ideology but organisation. These campaigns relied heavily on grassroots activism, volunteer networks and voter engagement rather than traditional political machines. Their success challenged another longstanding assumption in American politics: that money alone determines electoral outcomes.

AIPAC remains among the most influential lobbying organisations in Washington and continues to command enormous financial resources. Yet the New York results suggest that even substantial political spending cannot always overcome a motivated grassroots movement, particularly when voters perceive a clear moral issue at stake. For many younger Americans, Gaza has become precisely such an issue.

The devastation of the war, the enormous Palestinian civilian death toll, settlement expansion in the occupied West Bank and Israel’s military operations in southern Lebanon have all contributed to growing scrutiny of Israeli government policies. Increasingly, younger voters view these issues not as distant foreign policy concerns but as questions of human rights and justice.

The significance of these developments extends far beyond New York. The same political forces reshaping the Democratic Party are also accelerating the rise of Muslim and Arab Americans as participants in the nation’s political leadership.

For decades, these communities were active participants in American democracy, yet remained underrepresented in elected office. That imbalance is beginning to change.

The 2026 election cycle has seen a record number of Muslim and Arab American candidates seeking office at every level of government. More importantly, many are succeeding because they are building broad electoral coalitions rather than relying solely on ethnic or religious constituencies.

In New Jersey, Egyptian American physician and military veteran Adam Hamawy secured the Democratic nomination for Congress after assembling support that extended well beyond Arab and Muslim voters. In California, State Senator Aisha Wahab won a competitive Democratic primary, reflecting how Muslim American candidates are increasingly viewed as mainstream political leaders capable of representing diverse constituencies.

Perhaps the most significant race outside New York is unfolding in Michigan, home to one of the country’s largest Arab American communities. There, Dr Abdul El-Sayed, a physician, public health expert, and former Detroit health director, is running for the United States Senate. His campaign, centred on healthcare reform, economic fairness and democratic accountability, has gained considerable momentum. Many observers regard him as the favourite to win, a result that would mark a historic milestone for both Arab American political participation and progressive politics nationally.

What connects these candidacies to the changes witnessed in New York is a growing conviction that political participation must move beyond advocacy and into governance. Increasingly, Muslim and Arab Americans see electoral politics not merely as a means of representation but as a mechanism for shaping policy and exercising power.

The war in Gaza has accelerated this process. Across the country, community organisations report increases in voter registration, fundraising, candidate recruitment, and grassroots organising. A generation shaped by the post-9/11 era and now the Gaza war is increasingly determined to translate political frustration into electoral influence.

Challenges remain. Muslim and Arab American candidates continue to face scrutiny regarding religion, identity and foreign policy, while harassment and disinformation remain persistent obstacles.

Yet these challenges no longer define the story.

The larger story is one of political maturation and democratic inclusion. The victories in New York, the growing influence of progressive movements, and the increasing success of Muslim and Arab American candidates all point in the same direction. Together, they signal the emergence of constituencies that are no longer content to petition power from the outside but are increasingly determined to exercise it from within.

Whether these developments ultimately transform American foreign policy remains uncertain. What is already clear, however, is that the political landscape is changing. Voices once relegated to the margins are moving towards the centre, and assumptions that have shaped American politics for generations are being tested by a new electorate.

That may prove to be the most enduring lesson of 2026: not simply that new candidates won elections, but that new political forces have arrived, and they intend to stay.

The views expressed in this article are the author’s own and do not necessarily reflect Al Jazeera’s editorial policy.