Markham—Thornhill (federal electoral district)

Markham—Thornhill is a federal electoral district in Ontario, Canada, that has been represented in the House of Commons of Canada since 2015. It encompasses a portion of Ontario previously included in the electoral districts of Markham—Unionville and Thornhill.^[3]

Markham—Thornhill

Ontario electoral district
Interactive map of riding boundaries from the 2025 federal election
Federal electoral district
Legislature	House of Commons
MP	Tim Hodgson Liberal
District created	2013
First contested	2015
Last contested	2021
District webpage	profile, map
Demographics
Population (2021)[1]	97,510
Electors (2015)	70,211
Area (km²)[2]	44
Pop. density (per km²)	2,216.1
Census division(s)	York
Census subdivision(s)	Markham (part)

Markham—Thornhill was created by 2012 federal electoral boundaries redistribution and was legally defined in the 2013 representation order. It came into effect upon the dropping of the writs for the 2015 federal election.^[4]

Demographics

Markham—Thornhill loses more people than any other federal electoral district in the 905 region. The population in 2016 was 99,078 which is a 3.1% drop from 102,221 in 2011.

According to the 2021 Canadian census^[5]

Ethnic groups: 42.8% Chinese, 27.5% South Asian, 12.7% White, 3.8% Black, 2.7% Filipino, 3.0% West Asian, 1.3% Korean
Languages: 29.5% English, 18.7% Cantonese, 13.8% Mandarin, 7.6% Tamil, 3.1% Urdu, 2.3% Punjabi, 2.0% Persian, 1.9% Gujarati, 1.3% Tagalog, 1.0% Korean
Religions: 28.2% Christian (13.5% Catholic, 2.4% Christian Orthodox, 1.0% Anglican, 11.3% other), 14.3% Hindu, 10.8% Muslim, 4.7% Buddhist, 3.1% Jewish, 2.2% Sikh, 36.1% none
Median income: $32,400 (2020)
Average income: $47,640 (2020)

Members of Parliament

This riding has elected the following members of Parliament:

Parliament	Years	Member		Party
Markham—Thornhill Riding created from Markham—Unionville and Thornhill
42nd	2015–2017		John McCallum	Liberal
	2017–2019		Mary Ng
43rd	2019–2021
44th	2021–2025
45th	2025–present		Tim Hodgson

Election results

Graph of general election results in Markham—Thornhill (minor parties that never got 2% of the vote or didn't run consistently are omitted)

2025

v t e 2025 Canadian federal election
** Preliminary results — Not yet official **
Party	Candidate	Votes	%	±%	Expenditures
	Liberal	Tim Hodgson	27,504	54.54	–7.00
	Conservative	Lionel Loganathan	21,003	41.65	+15.27
	New Democratic	Aftab Qureshi	1,022	2.03	–6.33
	People's	Mimi Lee	747	1.48	–0.24
	Centrist	Haider Qureshi	153	0.30	N/A
Total valid votes/expense limit
Total rejected ballots
Turnout			50,429	63.77
Eligible voters			79,081
	Liberal notional hold		Swing		–11.14
Source: Elections Canada[6][7]

2021

v t e 2021 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	Liberal	Mary Ng	23,709	61.5	+7.6	$67,977.46
	Conservative	Melissa Felian	10,136	26.3	-8.3	$57,520.72
	New Democratic	Paul Sahbaz	3,222	8.4	+1.1	$633.62
	Green	Mimi Lee	813	2.1	-0.7	$4,285.37
	People's	Ilia Pashaev	648	1.7	+0.9	$1,203.75
Total valid votes/expense limit			38,528	–	–	$106,559.92
Total rejected ballots			398
Turnout			38,926	55.70
Eligible voters			69,883
Source: Elections Canada[8]

2021 federal election redistributed results[9]
Party		Vote	%
	Liberal	27,193	61.54
	Conservative	11,659	26.38
	New Democratic	3,693	8.36
	Green	883	2.00
	People's	762	1.72

2019

v t e 2019 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	Liberal	Mary Ng	23,899	53.91	+2.55	$80,357.71
	Conservative	Alex Yuan	15,319	34.56	-4.43	$74,064.17
	New Democratic	Paul Sahbaz	3,233	7.29	+3.81	none listed
	Green	Chris Williams	1,247	2.81	+0.60	none listed
	People's	Peter Remedios	357	0.81		$0.00
	Independent	Josephbai Macwan	276	0.62		none listed
Total valid votes/expense limit			44,331	100.0
Total rejected ballots			448	1.00	+0.41
Turnout			44,779	61.76	+31.14
Eligible voters			72,499
	Liberal hold		Swing		+3.49
Source: Elections Canada[10][11]

2017 by-election

A by-election was held on April 3, 2017, following John McCallum's appointment as ambassador to China on January 10, 2017.^[12]

v t e Canadian federal by-election, April 3, 2017 Resignation of John McCallum
Party	Candidate	Votes	%	±%
	Liberal	Mary Ng	9,856	51.53	−4.19
	Conservative	Ragavan Paranchothy	7,501	39.22	+6.91
	New Democratic	Gregory Hines	671	3.51	−7.21
	Progressive Canadian	Dorian Baxter	566	2.96
	Green	Caryn Bergmann	426	2.23	+0.98
	Libertarian	Brendan Thomas Reilly	118	0.62
	Independent	Above Znoneofthe	77	0.40
Total valid votes/expense limit			19,125	100.0	–
Total rejected ballots				-
Turnout			27.51
Eligible voters			69,838
	Liberal hold		Swing		−5.55

2015

2015 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	Liberal	John McCallum	23,878	55.72	+18.61	$78,406.90
	Conservative	Jobson Easow	13,849	32.31	-4.08	$128,323.59
	New Democratic	Senthi Chelliah	4,595	10.72	-12.67	$48,598.52
	Green	Joshua Russell	535	1.25	-1.37	–
Total valid votes/expense limit			42,857	100.00		$203,953.81
Total rejected ballots			240	0.56	–
Turnout			43,097	61.14	–
Eligible voters			70,484
	Liberal notional hold		Swing		+11.34
Source: Elections Canada[13][14]

2011 federal election redistributed results[15]
Party		Vote	%
	Liberal	14,128	37.11
	Conservative	13,856	36.39
	New Democratic	8,907	23.39
	Green	998	2.62
	Others	186	0.49

See also

• List of Canadian electoral districts
• Historical federal electoral districts of Canada
• Markham—Thornhill (provincial electoral district)