The Canadian Encyclopedia — neutral, cited, updated
July 27, 2026Sources cited
Canadianwire.
Canada’s encyclopedia & explainer
Home›Politics & World›Canadian Politics›Tom Mulcair
Politics & World • Canadian Politics

Tom Mulcair

Tom Mulcair is a Canadian lawyer and retired politician who served as leader of the New Democratic Party from 2012 to 2017.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Tom Mulcair is a Canadian lawyer and retired politician who served as leader of the New Democratic Party from 2012 to 2017. He was the Member of Parliament for Outremont from 2007 to 2018 and served as Leader of the Official Opposition from 2012 to 2015.

Early life and education

Mulcair was born in Ottawa and raised in Quebec in a bilingual, bicultural family. He studied law at McGill University and began his career in law and public service.

Quebec provincial politics

Before entering federal politics, Mulcair was a member of the Quebec National Assembly from 1994 to 2007. He later served as Quebec’s environment minister in the Charest government.

Federal political career

Mulcair won a federal byelection in 2007 and represented Outremont until 2018. He became NDP leader in 2012 and led the party during the 2015 federal election.

Later career

After leaving federal politics, Mulcair became active as a commentator and educator. He has also written about his political career and public life.

Key facts

  • Born in Ottawa and raised in Quebec, Mulcair worked as a lawyer and in public service before entering federal politics.
  • He was first elected to the House of Commons in 2007 in a byelection for Outremont.
  • Mulcair led the NDP from 2012 to 2017.
  • He served as Leader of the Official Opposition from 2012 to 2015.
  • Before federal politics, he was a Quebec provincial politician and served in Jean Charest’s cabinet.
🍁
Canadian context

Mulcair is a significant figure in modern Canadian federal politics, especially for his role in leading the NDP and helping the party become Official Opposition in 2011 and after.

Frequently asked questions

Who is Tom Mulcair?
Tom Mulcair is a Canadian lawyer and former politician who led the NDP from 2012 to 2017.
What riding did Tom Mulcair represent?
He represented Outremont in Quebec in the House of Commons from 2007 to 2018.
Was Tom Mulcair Leader of the Official Opposition?
Yes. He served as Leader of the Official Opposition from 2012 to 2015.
What party did Tom Mulcair belong to?
He was a member of the New Democratic Party (NDP).
Did Tom Mulcair serve in Quebec politics?
Yes. He served in the Quebec National Assembly from 1994 to 2007 and was environment minister under Premier Jean Charest.

References

  1. Encyclopaedia Britannica — https://www.britannica.com/biography/Tom-Mulcair
    Supports: Birth details, occupation, and NDP leadership dates.
  2. House of Commons of Canada — https://www.ourcommons.ca/members/en/thomas-j-mulcair(26684)/roles
    Supports: Federal MP roles and dates for Outremont.
  3. CBC News — https://www.cbc.ca/news/politics/who-is-tom-mulcair-5-questions-canadians-asked-google-1.3203181
    Supports: Quebec provincial career, cabinet service, and general background.
  4. Wikipedia — https://en.wikipedia.org/wiki/Tom_Mulcair
    Supports: Overview of federal roles, leadership dates, and parliamentary service.
  5. EBSCO Research Starters — https://www.ebsco.com/research-starters/biography/thomas-mulcair
    Supports: Education, political career progression, and post-political work.