New York City Mayor Zohran Mamdani has secured a substantial rise in public favorability among municipal voters, with a new Siena College survey showing his approval rating reaching 69% in early August. The 11-point jump from 58% in June comes at a pivotal moment for the administration, which faces intensifying friction with the New York City Council over its fiscal agenda and executive posturing.
According to data published by Siena College and reported by USA Today, 24% of city residents view the mayor unfavorably, while roughly 8% remain undecided. The survey of 811 likely New York voters highlights a pronounced geographic divide: statewide, Mamdani holds a narrower 47% to 44% favorability split, demonstrating that his primary political strength remains concentrated within the five boroughs.
Trajectory and Historical Baseline
Mamdani, who assumed office on January 1, 2026, as the city’s first Muslim mayor, first South Asian mayor, and its youngest chief executive in more than a century, initially logged a more modest approval arc. At his 100-day milestone in April, a Marist poll recorded his citywide favorability at 55%. By comparison, his predecessor Eric Adams held a 61% rating at the same mark in March 2022. However, while Adams’ numbers fluctuated downward, Mamdani’s urban support base has expanded steadily through mid-summer.
Political alignment within the city plays a central role in these figures. A member of the Democratic Socialists of America (DSA), Mamdani reflects broader ideological trends in the city, where the DSA holds a 49% favorable to 32% unfavorable rating. Across the state, however, public sentiment toward the organization flips significantly, registering 30% favorable against 47% unfavorable.
Fiscal Agenda and Legislative Friction
The surge in public backing coincides with heightened political stakes at City Hall. The administration recently introduced a controversial pied-à-terre tax aimed at high-value luxury real estate and secondary residences. The execution and public rollout of the proposal drew immediate pushback from legislative leaders and industry stakeholders, prompting observers to note an end to the mayor’s initial honeymoon phase.
Tensions reached a key inflection point when executive representatives declined to participate in a City Council oversight hearing regarding the tax framework. The administration’s increasingly confrontational stance toward the municipal legislature reflects a high-stakes calculation: leveraging direct popular support within the city to bypass or pressure council members. Whether this public favorability can be translated into statutory passage for the pied-à-terre tax without paralyzing broader legislative negotiations remains the defining test of Mamdani’s first year in office.