Sarnia—Lambton (provincial electoral district)

Sarnia—Lambton
Ontario electoral district
	Sarnia—Lambton in relation to other southwestern Ontario electoral districts
Provincial electoral district
Legislature	Legislative Assembly of Ontario
MPP	Bob Bailey; Progressive Conservative
;
District created	1999
First contested	1999
Last contested	2025
Demographics
Population (2016)	105,335
Electors (2018)	84,296
Area (km²)	1,755
Pop. density (per km²)	60
Census division	Lambton County
Census subdivision(s)	Sarnia, St. Clair, Plympton-Wyoming, Petrolia, Enniskillen, Point Edward

Sarnia—Lambton is a provincial electoral district in Southwestern Ontario, Canada. It elects one member to the Legislative Assembly of Ontario.

District created1999

First contested1999

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The riding was created in 1999 from Sarnia and from part of Lambton when ridings in Ontario were redrawn to match federal ridings.

From 1999 to 2007, the riding consisted of the municipalities of Sarnia, Point Edward, St. Clair and Sarnia 45. For the 2007 election, it gained the municipalities of Petrolia, Plympton-Wyoming, Oil Springs and Enniskillen.

Sarnia—Lambton
Assembly	Years	Member		Party
Riding created from Sarnia and Lambton
37th	1999–2003		Caroline Di Cocco	Liberal
38th	2003–2007		Caroline Di Cocco	Liberal
39th	2007–2011		Bob Bailey	Progressive Conservative
40th	2011–2014
41st	2014–2018
42nd	2018–2022
43rd	2022–present

2025 Ontario general election
Party	Candidate	Votes	%	±%	Expenditures
	Progressive Conservative	Bob Bailey	22,726	51.32	–1.40	$36,693
	New Democratic	Candace Young	8,716	19.68	–3.94	$12,483
	Liberal	Rachel Willsie	8,134	18.37	+7.92	$17,540
	New Blue	Keith Benn	1,876	4.24	–2.53	$9,310
	Independent	Nathan Colquhoun	890	2.00	N/A	$200
	Green	Pamela Reid	840	1.90	–1.25	$0
	Libertarian	Jacques Boudreau	591	1.33	N/A	$0
	Ontario Party	Mark Lamore	359	0.81	–0.06	$0
	Populist	Tom Stoukas	151	0.34	–2.08	$0
Total valid votes/expense limit			44,283	99.18	-0.04	$142,303
Total rejected, unmarked, and declined ballots			267	0.82	+0.04
Turnout			44,650	50.67	+3.98
Eligible voters			88,116
	Progressive Conservative hold		Swing		+1.5
Source: Elections Ontario^[1]

v t e 2022 Ontario general election
Party	Candidate	Votes	%	±%	Expenditures
	Progressive Conservative	Bob Bailey	21,184	52.72	−0.02	$29,549
	New Democratic	Dylan Stelpstra	9,489	23.62	−13.75	$34,373
	Liberal	Mark Russell	4,200	10.45	+6.03	$0
	New Blue	Keith Benn	2,719	6.77		$13,739
	Green	Mason Bourdeau	1,266	3.15	−0.50	$0
	Populist	Carla Olson	972	2.42		$0
	Ontario Party	Ian Orchard	351	0.87		$0
Total valid votes/expense limit			40,181	99.22	+0.19	$121,429
Total rejected, unmarked, and declined ballots			315	0.78	-0.19
Turnout			40,496	46.69	-14.20
Eligible voters			86,320
	Progressive Conservative hold		Swing		+6.86
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.

2014 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Bob Bailey	18,722	41.01	-7.23
	New Democratic	Brian White	16,327	35.77	+10.28
	Liberal	Anne Marie Gillis	8,152	17.86	-3.97
	Green	Kevin Shaw	2,109	4.62	+3.22
	Libertarian	Andrew K. Falby	340	0.74	+0.35
Total valid votes			45,650	100.00
	Progressive Conservative hold		Swing		-8.76
Source: Elections Ontario^[3]

Members of Provincial Parliament

2007 Ontario electoral reform referendum
Side		Votes	%
	First Past the Post	27,801	67.2
	Mixed member proportional	13,594	32.8
	Total valid votes	41,395	100.0