Markham—Stouffville (federal electoral district)

For the provincial electoral district, see Markham—Stouffville (provincial electoral district).

Markham—Stouffville is a federal electoral district in Ontario, Canada. It encompasses a portion of Ontario previously included in the electoral districts of Markham—Unionville and Oak Ridges—Markham.^[4]

Markham—Stouffville

Ontario electoral district
Interactive map of riding boundaries from the 2025 federal election
Federal electoral district
Legislature	House of Commons
MP	Helena Jaczek Liberal
District created	2013
First contested	2015
Last contested	2021
District webpage	profile, map
Demographics
Population (2021)[1]	135,944
Electors (2021)[2]	96,687
Area (km²)[3]	299
Pop. density (per km²)	454.7
Census division(s)	Regional Municipality of York
Census subdivision(s)	Markham (part), Whitchurch–Stouffville (part)

Markham—Stouffville was created by the 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. Helena Jaczek has represented the riding since the 2019 federal election.

Geography

The territory of the riding (map^[5]) consists of part of the Regional Municipality of York: (a) the Town of Whitchurch-Stouffville; and (b) the part of the City of Markham lying easterly of a line described as follows: commencing at the intersection of the northerly limit of Markham with Highway 48; then southerly along Highway 48 to 16th Avenue; then westerly to McCowan Road; then southerly to Highway 407; then easterly along Highway 407 to the Rouge River; then generally southeasterly along Rouge River to the southerly limit of Markham. The riding's population is estimated at 109,780.^[6]

Demographics

According to the 2021 Canadian census^[7]

Ethnic groups: 36.0% White, 27.7% Chinese, 19.0% South Asian, 3.7% Black, 3.6% Filipino, 1.1% Arab, 1.1% West Asian

Languages: 51.2% English, 12.7% Cantonese, 7.1% Mandarin, 4.9% Tamil, 1.6% Italian, 1.6% Urdu, 1.4% Tagalog, 1.0% Gujarati

Religions: 47.0% Christian (22.3% Catholic, 4.3% Christian Orthodox, 2.6% Anglican, 2.2% United Church, 1.3% Baptist, 1.1% Presbyterian, 13.2% Other), 10.2% Hindu, 6.9% Muslim, 2.4% Buddhist, 1.0% Sikh, 31.5% None

Median income: $43,200 (2020)

Average income: $59,800 (2020)

Riding associations

Riding associations are the local branches of the national political parties:

Party		Association name	CEO	HQ city
	Conservative Party of Canada	Markham--Stouffville Conservative Association	Jeyaprakash N. Kirthiraj	Whitchurch-Stouffville
	Green Party of Canada	Markham--Stouffville Green Party Association	Mary-Louise A. Prosen	Markham
	Liberal Party of Canada	Markham--Stouffville Federal Liberal Association	Catherine E. Harris	Markham
	New Democratic Party	Markham--Stouffville Federal NDP Riding Association	Jessica Pointon	Ottawa

Members of Parliament

This riding has elected the following members of Parliament:

Parliament	Years	Member		Party
Markham—Stouffville Riding created from Markham—Unionville and Oak Ridges—Markham
42nd	2015–2019		Jane Philpott	Liberal
	2019–2019			Independent
43rd	2019–2021		Helena Jaczek	Liberal
44th	2021–2025
45th	2025–present

Election results

Graph of general election results in Markham—Stouffville (parties that never received 2% of the vote are omitted)

v t e 2025 Canadian federal election
** Preliminary results — Not yet official **
Party	Candidate	Votes	%	±%	Expenditures
	Liberal	Helena Jaczek	31,760	51.44	–0.11
	Conservative	Niran Jeyanesan	27,898	45.18	+10.43
	New Democratic	Serena Cheung	1,121	1.82	–6.97
	Green	Myles O'Brien	433	0.70	–1.27
	People's	René de Vries	393	0.64	–2.30
	Centrist	Shahzad Ahmed	141	0.23	N/A
Total valid votes/expense limit
Total rejected ballots
Turnout			61,746	69.56
Eligible voters			88,770
	Liberal notional hold		Swing		–5.27
Source: Elections Canada[8][9]

v t e 2021 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	Liberal	Helena Jaczek	29,773	50.99	+12.11	$102,548.63
	Conservative	Ben Smith	20,740	35.52	+4.78	$105,317.55
	New Democratic	Muhammad Ahsin Sahi	4,961	8.50	+2.19	$2,935.24
	People's	René De Vries	1,869	3.20	+2.37	$4,030.60
	Green	Uzair Baig	1,049	1.80	-0.69	$3,158.35
Total valid votes/expense limit			58,392	–	–	$124,038.54
Total rejected ballots			459
Turnout			58,851	60.78	-7.78
Eligible voters			96,829
	Liberal hold		Swing		+3.67
Source: Elections Canada[10]

2021 federal election redistributed results[11]
Party		Vote	%
	Liberal	25,391	51.55
	Conservative	17,118	34.75
	New Democratic	4,329	8.79
	People's	1,448	2.94
	Green	972	1.97

v t e 2019 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	Liberal	Helena Jaczek	24,743	38.88	-10.33	$101,615.44
	Conservative	Theodore Antony	19,570	30.74	-12.03	$80,408.76
	Independent	Jane Philpott	13,216	20.76		$101,260.04
	New Democratic	Hal Berman	4,013	6.30	+0.2	none listed
	Green	Roy Long	1,581	2.48	+0.56	$5,982.06
	People's	Jeremy Lin	531	0.83		$1,962.39
Total valid votes/expense limit			63,654	100.0
Total rejected ballots
Turnout
Eligible voters
	Liberal hold		Swing		+0.85
Sources: CBC News[12], Elections Canada[13]

2015 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	Liberal	Jane Philpott	29,416	49.21	+20.26	$112,011.35
	Conservative	Paul Calandra	25,565	42.77	-7.72	$164,609.85
	New Democratic	Gregory Hines	3,647	6.10	-10.88	$7,176.28
	Green	Myles O'Brien	1,145	1.92	-0.81	$1,395.62
Total valid votes/Expense limit			59,773	100.00		$225,802.37
Total rejected ballots			189	0.32
Turnout			59,962	68.56
Eligible voters			87,460
	Liberal notional gain from Conservative		Swing		+13.99
Source: Elections Canada[14][15]

2011 federal election redistributed results[16]
Party		Vote	%
	Conservative	23,820	50.49
	Liberal	13,662	28.96
	New Democratic	8,010	16.98
	Green	1,284	2.72
	Others	406	0.86
Total		47,182	100.00

See also

• List of Canadian electoral districts
• Historical federal electoral districts of Canada