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Bill de Blasio

Bill de Blasio is an American Democratic politician who served as mayor of New York City from 2014 to 2021.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Bill de Blasio is an American Democratic politician who served as mayor of New York City from 2014 to 2021. Before becoming mayor, he represented Brooklyn on the New York City Council and served as New York City public advocate. His mayoralty was associated with progressive policies, including universal pre-kindergarten and expanded mental health and policing reforms.

Early life and education

Bill de Blasio was born in Manhattan on May 8, 1961, as Warren Wilhelm Jr. He was raised primarily in Cambridge, Massachusetts. He attended New York University and later Columbia University for his education.

Political career

De Blasio began his political career working on campaigns, including for Charles Rangel and Hillary Clinton. He was elected to the New York City Council representing Brooklyn's 39th district, serving from 2002 to 2009. He then served one term as New York City public advocate before winning the mayoral election in 2013.

Mayor of New York City

De Blasio served as mayor from 2014 to 2021, winning reelection in 2017. His administration introduced free universal pre-kindergarten in New York City and implemented various mental health programs. He also pursued reforms in policing and cannabis enforcement.

Later activity

After leaving office, de Blasio remained active in public politics. He sought the 2020 Democratic presidential nomination but later withdrew from the race.

Key facts

  • Born in Manhattan and raised in Cambridge, Massachusetts.
  • Graduated from New York University and Columbia University.
  • Served on the New York City Council from 2002 to 2009.
  • Served as New York City public advocate before becoming mayor.
  • His administration introduced free universal pre-kindergarten in New York City.
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Canadian context

No direct Canada-specific connection is apparent, though his tenure as mayor of New York City is of interest to Canadian readers because New York is a major North American city with economic, cultural, and political influence.

Frequently asked questions

Who is Bill de Blasio?
Bill de Blasio is an American Democratic politician who served as mayor of New York City from 2014 to 2021.
What was Bill de Blasio's birth name?
He was born Warren Wilhelm Jr.
What offices did he hold before becoming mayor?
He served on the New York City Council and later as New York City public advocate.
What is Bill de Blasio known for as mayor?
He is known for progressive policies, including free universal pre-kindergarten and several criminal justice and mental health initiatives.
When was he elected mayor?
He was elected in 2013 and took office in 2014.
What party does Bill de Blasio belong to?
He is a member of the Democratic Party.

References

  1. Encyclopaedia Britannicahttps://www.britannica.com/biography/Bill-de-Blasio
    Supports: Birth date, birthplace, political party, offices held, and mayoral tenure.
  2. Wikipediahttps://en.wikipedia.org/wiki/Bill_de_Blasio
    Supports: Education, early career, City Council service, public advocate role, and policy initiatives as mayor.
  3. Center for Public Integrityhttps://publicintegrity.org/politics/elections/presidential-profiles-2020/bill-de-blasio-president/
    Supports: His 2020 presidential campaign announcement and political profile details.
  4. Treccanihttps://www.treccani.it/enciclopedia/bill-de-blasio/
    Supports: Education, political background, mayoral election results, and succession in office.