Cambridge (provincial electoral district)

Cambridge
Ontario electoral district
	Cambridge in relation to other southwestern Ontario electoral districts
Provincial electoral district
Legislature	Legislative Assembly of Ontario
MPP	Brian Riddell; Progressive Conservative
;
District created	1975
First contested	1975
Last contested	2025
Demographics
Population (2016)	115,460
Electors (2018)	88,380
Area (km²)	355
Pop. density (per km²)	325.2
Census division	Waterloo
Census subdivision(s)	Cambridge, North Dumfries

LegislatureLegislative Assembly of Ontario

MPP

Brian Riddell
Progressive Conservative

District created1975

First contested1975

Cambridge is a provincial electoral district in southwestern, Ontario, Canada. It elects one member to the Legislative Assembly of Ontario. It was created in 1975.

From 1987 to 1999, it consisted of the city of Cambridge plus that part the township of North Dumfries located directly to the east of Cambridge.

From 1999 to 2007 it consisted of Cambridge, North Dumfries plus the city of Kitchener east of a line following Homer Watson Boulevard to Doon Village Road to Homer Watson Boulevard again, then to Huron Road to the Grand River.

Since 2007, the riding has included only Cambridge and North Dumfries.

Cambridge
Assembly	Years	Member		Party
*Riding created*
30th	1975–1977		Monty Davidson	New Democratic
31st	1977–1981		Monty Davidson	New Democratic
32nd	1981–1985		Bill Barlow	Progressive Conservative
33rd	1985–1987		Bill Barlow	Progressive Conservative
34th	1987–1990		Michael Farnan	New Democratic
35th	1990–1995		Michael Farnan	New Democratic
36th	1995–1999		Gerry Martiniuk	Progressive Conservative
37th	1999–2003
38th	2003–2007
39th	2007–2011
40th	2011–2014		Rob Leone
41st	2014–2018		Kathryn McGarry	Liberal
42nd	2018–2020		Belinda Karahalios	Progressive Conservative
	2020–2021			Independent
	2021–2022			New Blue
43rd	2022–present		Brian Riddell	Progressive Conservative

v t e 2025 Ontario general election
Party	Candidate	Votes	%	±%	Expenditures
	Progressive Conservative	Brian Riddell	19,210	43.66	+6.63	$79,790
	Liberal	Rob Deutschmann	15,131	34.39	+13.69	$75,914
	New Democratic	Marjorie Knight	5,074	11.53	–10.66	$10,959
	Green	Carla Johnson	2,519	5.72	–3.26	$26,384
	New Blue	Belinda Karahalios	2,067	4.70	–6.40	$12,335
Total valid votes/expense limit			44,001	99.44	-0.08	$155,491
Total rejected, unmarked, and declined ballots			247	0.56	+0.08
Turnout			44,248	46.19	+2.97
Eligible voters			95,786
	Progressive Conservative hold		Swing		–3.5
Source: Elections Ontario^[1]

v t e 2022 Ontario general election
Party	Candidate	Votes	%	±%	Expenditures
	Progressive Conservative	Brian Riddell	14,590	37.03	+0.06 †	$84,737
	New Democratic	Marjorie Knight	8,745	22.19	−10.30	$54,806
	Liberal	Surekha Shenoy	8,155	20.70	−2.55	$77,446
	New Blue	Belinda Karahalios	4,374	11.10	-25.87 †	$98,338
	Green	Carla Johnson	3,537	8.98	+2.71	$14,902
Total valid votes/expense limit			39,401	99.52	+0.81	$128,747
Total rejected, unmarked, and declined ballots			190	0.48	-0.81
Turnout			39,591	43.22	-11.95
Eligible voters			91,954
	Progressive Conservative gain from New Blue		Swing		+5.18
Source(s) "Summary of Valid Votes Cast for Each Candidate" (PDF). Elections Ontario. 2022. Archived from the original on May 18, 2023. "Statistical Summary by Electoral District" (PDF). Elections Ontario. 2022. Archived from the original on May 21, 2023.

2018 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Belinda Karahalios	17,793	36.97%	+4.41
	New Democratic	Marjorie Knight	15,639	32.49%	+10.88
	Liberal	Kathryn McGarry	11,191	23.25%	-15.67
	Green	Michele Braniff	3,018	6.27%	+0.61
	Libertarian	Allan Dettweiler	490	1.02%	-0.24
Total valid votes				100.0
	Progressive Conservative gain from Liberal		Swing		-
Source: Elections Ontario^[2]

2014 Ontario general election
Party	Candidate	Votes	%	±%
	Liberal	Kathryn McGarry	18,763	38.92	+5.85
	Progressive Conservative	Rob Leone	15,694	32.56	-5.13
	New Democratic	Bobbi Stewart	10,415	21.61	-3.00
	Green	Temara Brown	2,726	5.66	+3.16
	Libertarian	Allan R. Dettweiler	605	1.26	-0.23
Total valid votes			48,203	100.0
	Liberal gain from Progressive Conservative		Swing		+5.49
Source: Elections Ontario^[3]

Cambridge (provincial electoral district)

Election results

2007 electoral reform referendum

See also

References

Related Articles

2007 Ontario electoral reform referendum
Side		Votes	%
	First Past the Post	25,902	61.4
	Mixed member proportional	16,260	38.6
	Total valid votes	42,162	100.0

v t e Provincial ridings in Ontario
Northern	Algoma—Manitoulin Kenora—Rainy River Kiiwetinoong Mushkegowuk—James Bay Nickel Belt Nipissing Parry Sound—Muskoka Sault Ste. Marie Sudbury Thunder Bay—Atikokan Thunder Bay—Superior North Timiskaming—Cochrane Timmins
Eastern	Bay of Quinte Glengarry—Prescott—Russell Hastings—Lennox and Addington Kingston and the Islands Lanark—Frontenac—Kingston Leeds—Grenville—Thousand Islands and Rideau Lakes Renfrew—Nipissing—Pembroke Stormont—Dundas—South Glengarry
Central	Barrie—Innisfil Barrie—Springwater—Oro-Medonte Bruce—Grey—Owen Sound Dufferin—Caledon Haliburton—Kawartha Lakes—Brock Northumberland—Peterborough South Peterborough—Kawartha Simcoe—Grey Simcoe North York—Simcoe
Midwestern	Brantford—Brant Cambridge Guelph Haldimand—Norfolk Huron—Bruce Kitchener Centre Kitchener—Conestoga Kitchener South—Hespeler Oxford Perth—Wellington Waterloo Wellington—Halton Hills
Southwestern	Chatham-Kent—Leamington Elgin—Middlesex—London Essex Lambton—Kent—Middlesex London—Fanshawe London North Centre London West Sarnia—Lambton Windsor—Tecumseh Windsor West
Peel	Brampton Centre Brampton East Brampton North Brampton South Brampton West Mississauga Centre Mississauga East—Cooksville Mississauga—Erin Mills Mississauga—Lakeshore Mississauga—Malton Mississauga—Streetsville
Hamilton, Halton, and Niagara	Burlington Flamborough—Glanbrook Hamilton Centre Hamilton East—Stoney Creek Hamilton Mountain Hamilton West—Ancaster—Dundas Milton Niagara Centre Niagara Falls Niagara West Oakville North—Burlington Oakville St. Catharines
Ottawa	Carleton Kanata—Carleton Nepean Orléans Ottawa Centre Ottawa South Ottawa—Vanier Ottawa West—Nepean
Durham and York	Ajax Aurora—Oak Ridges—Richmond Hill Durham King—Vaughan Markham—Stouffville Markham—Thornhill Markham—Unionville Newmarket—Aurora Oshawa Pickering—Uxbridge Richmond Hill Thornhill Vaughan—Woodbridge Whitby
Toronto	Beaches—East York Davenport Don Valley East Don Valley North Don Valley West Eglinton—Lawrence Etobicoke Centre Etobicoke—Lakeshore Etobicoke North Humber River—Black Creek Parkdale—High Park Scarborough—Agincourt Scarborough Centre Scarborough—Guildwood Scarborough North Scarborough—Rouge Park Scarborough Southwest Spadina—Fort York Toronto Centre Toronto—Danforth Toronto—St. Paul's University—Rosedale Willowdale York Centre York South—Weston
See also: Federal ridings in Ontario List of elections Politics of Ontario

2007 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Gerry Martiniuk	17,884	41.66	-0.84
	Liberal	Kathryn McGarry	14,641	34.11	-1.08
	New Democratic	Mitchell Healey	5,923	13.80	-4.29
	Green	Colin Carmichael	3,835	8.93	+6.84
	Family Coalition	Paul Vendervet	650	1.50	-0.63
Total valid votes			42,933	100.00

2003 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Gerry Martiniuk	19,996	42.50	-12.34
	Liberal	Jerry Boyle	16,559	35.19	+12.34
	New Democratic	Pam Wolf	8,513	18.09	-1.28
	Family Coalition	Al Smith	1001	2.13	+0.29
	Green	Michael Chownyk	983	2.09	+1.00
Total valid votes			47,052	100.00

1999 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Gerry Martiniuk	24,583	54.84	+7.91
	Liberal	Jerry Boyle	10,244	22.85	+7.61
	New Democratic	Gary Gibson	8,684	19.37	-12.69
	Family Coalition	Al Smith	824	1.84	-2.75
	Green	Kathleen Morton	489	1.09
Total valid votes			44,824	100.00

1995 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Gerry Martiniuk	17,269	46.93	+34.63
	New Democratic	Mike Farnan	11,797	32.06	-28.22
	Liberal	Ben Tucci	5,606	15.24	-5.65
	Family Coalition	Al Smith	1,690	4.59	-1.94
	Independent	Reg Gervais	433	1.18
Total valid votes			36,795	100.0