What is Thomas Mulcair?
{{Infobox CanadianMP |honorific-prefix = [[The Honourable]] |name = Tom Mulcair |honorific-suffix = [[Queen's Privy Council for Canada|PC]] |image = Thomas Mulcair 2015 (cropped).jpg |office1 = [[Leader of the Official Opposition (Canada)|Leader of the Opposition]] |monarch1 = [[Elizabeth II]] |primeminister1 = [[Stephen Harper]] |term_start1 = March 24, 2012 |term_end1 = November 4, 2015 |predecessor1 = [[Nycole Turmel]] |successor1 = [[Rona Ambrose]] |office2 = Leader of the [[New Democratic Party]] |term_start2 = March 24, 2012 |term_end2 = October 1, 2017 |predecessor2 = [[Nycole Turmel]] {{small|(Interim)}} |successor2 = [[Jagmeet Singh]] |office3 = [[Leader of the Opposition in the House of Commons (Canada)|Leader of the Opposition in the House of Commons]] |leader3 = [[Jack Layton]]<br />[[Nycole Turmel]] {{small|(Acting)}} |term_start3 = May 26, 2011 |term_end3 = October 12, 2011 |predecessor3 = [[David McGuinty]] |successor3 = [[Joe Comartin]] |term_start4 = September 17, 2007 |term_end4 = August 3, 2018 |constituency_MP4 = [[Outremont (electoral district)|Outremont]] |parliament4 = Canadian |predecessor4 = [[Jean Lapierre]] |successor4 = [[Rachel Bendayan]] |office5 = [[Ministry of Sustainable Development, Environment and Parks (Quebec)|Quebec Minister of the Environment]] |premier5 = [[Jean Charest]] |term_start5 = April 29, 2003 |term_end5 = February 27, 2006 |predecessor5 = [[André Boisclair]] |successor5 = [[Claude Béchard]] |office6 = Member of the [[National Assembly of Quebec]]<br />for [[Chomedey (electoral district)|Chomedey]] |term_start6 = September 12, 1994 |term_end6 = March 26, 2007 |predecessor6 = [[Lise Bacon]] |successor6 = [[Guy Ouellette]] |birth_name = Thomas Joseph Mulcair |birth_date = {{birth date and age|1954|10|24}} |birth_pl