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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	2022
Demographics
Population (2016)	115,460
Electors (2018)	88,380
Area (km²)	355
Pop. density (per km²)	325.2
Census division(s)	Waterloo
Census subdivision(s)	Cambridge, North Dumfries

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.

Members of Provincial Parliament

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

Election results

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		$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 2023-05-18. "Statistical Summary by Electoral District" (PDF). Elections Ontario. 2022. Archived from the original on 2023-05-21.

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^[1]

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^[2]

2011 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Rob Leone	15,947	37.69	-3.97
	Liberal	Kathryn McGarry	13,993	33.07	-1.04
	New Democratic	Atinuke Bankole	10,414	24.61	+10.81
	Green	Jacques Malette	1,056	2.50	-6.43
	Libertarian	Allan Dettweiler	629	1.49
	Independent	Robert Ross	271	0.64
Total valid votes			42,310	100.00
Total rejected, unmarked and declined ballots			187	0.44
Turnout			42,497	46.04
Eligible voters			92,310
	Progressive Conservative hold		Swing		-1.47
Source: Elections Ontario^[3]

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

1990 Ontario general election
Party	Candidate	Votes	%	±%
	New Democratic	Mike Farnan	21,806	60.28	+25.79
	Liberal	John Bell	7,557	20.89	-13.29
	Progressive Conservative	Carl DeFaria	4,449	12.30	-14.45
	Family Coalition	Anneliese Steden	2,364	6.53	+1.95
Total valid votes			36,176	100.0

1987 Ontario general election
Party	Candidate	Votes	%	±%
	New Democratic	Mike Farnan	11,284	34.49	-3.01
	Liberal	Claudette Millar	11,183	34.18	+12.02
	Progressive Conservative	Bill Barlow	8,752	26.75	-13.59
	Family Coalition	Anneliese Steden	1,500	4.58
Total valid votes			32,719	100.0

1985 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Bill Barlow	12,888	40.34	-2.48
	New Democratic	Mike Farnan	11,985	37.50	-2.43
	Liberal	Bob Jeffrey	7,083	22.16	+6.77
Total valid votes			31,956	100.0

1981 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Bill Barlow	12,597	42.82	+7.37
	New Democratic	Monty Davidson	11,748	39.93	+2.62
	Liberal	John Giles	4,527	15.39	-11.01
	Independent	George Molson Barrett	549	1.87
Total valid votes			29,421	100.0

1977 Ontario general election
Party	Candidate	Votes	%	±%
	New Democratic	Monty Davidson	11,120	37.31	-0.83
	Progressive Conservative	Bill Barlow	10,566	35.45	+6.33
	Liberal	Claudette Millar	7,870	26.40	-6.34
	Independent	John Long	252	0.85
Total valid votes			29,808	100.0

1975 Ontario general election
Party	Candidate	Votes	%
	New Democratic	Monty Davidson	11,255	38.14
	Liberal	Claudette Millar	9,662	32.74
	Progressive Conservative	Ruggles Constant	8,595	29.12
Total valid votes			29,512	100.0