Taking stock of a mayor’s first 100 days in office is a longstanding tradition, and history shows New York City’s leaders often notch early wins on signature issues while facing unexpected challenges.

Mayor Zohran Mamdani is the latest to confront that reality, but he is far from the first.

What You Need To Know

Looking back on previous New York City mayors’ first 100 days shows a pattern of early policy wins paired with unexpected crises and controversies

From fiscal crises to education and budget fights, early agendas often collide with setbacks

Giuliani and Adams also had to deal with high-profile incidents that quickly shaped public perception

Former Mayor Ed Koch entered office amid a budget crunch.

“The issue that I faced when I came into office was the fiscal instability of this city,” Koch once said.

David Dinkins also faced economic challenges early in his tenure.

“In my first 100 days, I guess we began — we realized that we were facing a recession,” Dinkins previously said.

Rudy Giuliani inherited a budget deficit and moved quickly to reduce the city workforce through a labor deal, though police and fire departments were spared. From day one, his brash and combative style was on display.

“Let me finish! Let me finish what I’m saying. I didn’t interrupt you,” Giuliani once yelled during a heated exchange at a town hall.

His approach drew criticism on issues like AIDS services and race relations. To mark his first 100 days, NY1 spoke to other politicians to gauge their opinions.

“He seems only to be meriting those who voted for him, which would make it a very politicized administration,” David Paterson said at the time.

Giuliani was even booed at a Martin Luther King Jr. service. His tenure also included clashes over education leadership, including a dispute that led Schools Chancellor Ramon Cortines to briefly announce his resignation on Giuliani’s 98th day in office.

Michael Bloomberg made education his top priority and quickly moved to secure mayoral control of schools, working with then-Gov. George Pataki and state lawmakers.

“From day one I said we are going to get control of the school system and make the schools better,” Bloomberg said.

But Bloomberg also took office in the aftermath of the Sept. 11 attacks, inheriting a strained budget and proposing cuts.

“The budget that we’re going to show you hurts everybody,” he said, proposing the first budget of his tenure.

At the same time, he secured more than $20 billion in federal aid and earned praise for improving relations with communities.

“It’s a breath of fresh air,” former state Comptroller Carl McCall said.

“I think he’s changed the climate of the way you do business with the mayor of the city of New York,” former Speaker of the New York Assembly Sheldon Silver added.

“On a pass/fail basis, he passes,” former New York City Public Advocate Mark Green said.

Bill de Blasio also saw early success, securing state funding for universal prekindergarten despite tensions with then-Gov. Andrew Cuomo.

“I can tell you, in the first hundred days we’ve already taken great strides,” de Blasio said.

He also moved to reform policing tactics and expand paid sick leave, working closely with the City Council.

“It’s great that we have a partner in the mayor that believes in the same vision that we have,” former New York City Council Speaker Melissa Mark-Viverito said.

“On many of the things that New Yorkers overwhelmingly want, we’re working together very closely,” former Councilmember Brad Lander added.

Still, de Blasio faced criticism over snow removal, reports about his motorcade violating traffic laws and a widely mocked moment eating pizza with a fork.

Eric Adams entered office focused on public safety, deploying more police officers to the subway system, revamping an anti-gun unit and clearing homeless encampments.

“The theme of my first 100 days is GSD — get stuff done,” Adams said.

He also promoted the city’s economic recovery as pandemic restrictions eased.

“When a mayor has swagger, the city has swagger,” he said.

But Adams’ early months were marked by high-profile crimes, including the fatal shooting of two police officers responding to a domestic call.

A COVID-19 surge tied to a new variant also complicated his plans. On his 100th day in office, Adams announced he had contracted the virus.