Guelph is a provincial electoral district in southwestern Ontario, Canada. It has been represented in the Legislative Assembly of Ontario from 1987 until 1999, and again from 2007 to present. The riding was created from portions of the Guelph—Wellington riding. The riding includes all of the city of Guelph.

Guelph
Assembly	Years	Member		Party
Riding created
34th	1987–1990		Enrico Ferraro	Liberal
35th	1990–1995		Derek Fletcher	New Democratic
36th	1995–1999		Brenda Elliott	Progressive Conservative
Riding dissolved
Riding created from Guelph—Wellington
39th	2007–2011		Liz Sandals	Liberal
40th	2011–2014
41st	2014–2018
42nd	2018–2022		Mike Schreiner	Green
43rd	2022–present

At the 2022 election, the Greens polled the most votes in all but four polling divisions across the riding.

v t e 2022 Ontario general election
Party	Candidate	Votes	%	±%	Expenditures
	Green	Mike Schreiner	29,752	54.45	+9.42	$110,235
	Progressive Conservative	Peter McSherry	11,149	20.41	−1.40	$3,934
	Liberal	Raechelle Devereaux	7,263	13.29	+3.17	$76,859
	New Democratic	James Parr	4,402	8.06	−13.51	$41,943
	New Blue	Will Lomker	1,619	2.96		$2,919
	Communist	Juanita Burnett	251	0.46	+0.29	$0
	None of the Above	Paul Taylor	202	0.37	−0.18	$0
Total valid votes/Expense limit			54,638	99.52	+0.31	$155,606
Total rejected, unmarked, and declined ballots			260	0.48	-0.31
Turnout			54,898	49.39	-11.73
Eligible voters			110,992
	Green hold		Swing		+5.41
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.

v t e 2018 Ontario general election
Party	Candidate	Votes	%	±%
	Green	Mike Schreiner	29,082	45.04	+25.75
	Progressive Conservative	Ray Ferraro	14,084	21.81	+0.97
	New Democratic	Agnieszka Mlynarz	13,929	21.57	+3.87
	Liberal	Sly Castaldi	6,537	10.12	−31.40
	None of the Above	Paul Taylor	358	0.55	+0.55
	Libertarian	Michael Riehl	297	0.46	+0.14
	Ontario Party	Thomas Mooney	181	0.28	+0.28
	Communist	Juanita Burnett	109	0.17	−0.17
Total valid votes			64,577	100.00	–
Total rejected, unmarked and declined ballots			505	0.78
Turnout			65,082	61.12
Eligible voters			106,481
	Green gain from Liberal		Swing		+12.39
Source: Elections Ontario

2014 Ontario general election
Party	Candidate	Votes	%	±%
	Liberal	Liz Sandals	22,014	41.52	-0.91
	Progressive Conservative	Anthony MacDonald	11,048	20.84	-4.76
	Green	Mike Schreiner	10,230	19.29	+12.36
	New Democratic	James Gordon	9,385	17.70	-6.18
	Communist	Juanita Burnett	178	0.34	+0.04
	Libertarian	Blair Smythe	170	0.32	-0.33
Total valid votes			53,025	100.00
	Liberal hold		Swing		+1.92
Source: Elections Ontario

2011 Ontario general election
Party	Candidate	Votes	%	±%
	Liberal	Liz Sandals	19,815	42.43	+1.68
	Progressive Conservative	Greg Schirk	11,954	25.60	+0.86
	New Democratic	James Gordon	11,150	23.88	+10.03
	Green	Steve Dyck	3,234	6.93	-12.52
	Libertarian	Philip Bender	305	0.65
	Communist	Drew Garvie	139	0.30	-0.1
	Independent	Julian Ichim	100	0.21
Total valid votes			46,697	100.0
Total rejected, unmarked and declined ballots			206	0.44
Turnout			46,903	50.27
Eligible voters			93,308
	Liberal hold		Swing		+0.41
Source: Elections Ontario

2007 Ontario general election
Party	Candidate	Votes	%	±%
	Liberal	Liz Sandals	20,346	40.75	-1.5
	Progressive Conservative	Bob Senechal	12,180	24.74	-12.37
	Green	Ben Polley	9,750	19.45	+12.44
	New Democratic	Karan Mann-Bowers	6,880	13.85	+1.86
	Family Coalition	John Gots	405	0.81	-0.83
	Communist	Drew Garvie	166	0.40
Total valid votes			49,727	100.0

2003 Ontario general election
Party	Candidate	Votes	%	±%
	Liberal	Liz Sandals	23,607	42.25	+8.98
	Progressive Conservative	Brenda Elliott	20,735	37.11	-15.51
	New Democratic	James Valcke	6,699	11.99	+0.15
	Green	Ben Polley	3,917	7.01	+5.54
	Family Coalition	Alan McDonald	914	1.64
Total valid votes			55,872	100.0

1999 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Brenda Elliott	26,246	52.62	+10.07
	Liberal	Wayne Hyland	16,595	33.27	+4.93
	New Democratic	Bruce Abel	5,907	11.84	-13.58
	Green	Bradley Shaw	733	1.47
	Independent	Anna Di Carlo (Marxist-Leninist)	396	0.79	+0.33
Total valid votes			49,877	100.0

1995 Ontario general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Brenda Elliott	17,204	42.55	+16.9
	Liberal	Rick Ferraro	11,459	28.34	-1.74
	New Democratic	Derek Fletcher	10,278	25.42	-12.49
	Family Coalition	John G. Gots	1,035	2.56	-1.48
	Libertarian	Thomas Bradburn	265	0.66
	Independent	Anna Di Carlo (Marxist-Leninist)	187	0.46
Total valid votes			40,428	100.0

1990 Ontario general election
Party	Candidate	Votes	%	±%
	New Democratic	Derek Fletcher	15,051	37.91	+10.7
	Liberal	Rick Ferraro	11,944	30.08	-24.96
	Progressive Conservative	Linda Lennon	10,184	25.65	+9.59
	Family Coalition	John G. Gots	1,602	4.04
	Green	Bill Hulet	920	2.32
Total valid votes			39,701	100.0

1987 Ontario general election
Party	Candidate	Votes	%
	Liberal	Rick Ferraro	18,445	55.04
	New Democratic	Derek Fletcher	9,119	27.21
	Progressive Conservative	Bob Pierce	5,383	16.06
	Independent	Bill Hulet	562	1.68
Total valid votes			33,509	100.0

2007 Ontario electoral reform referendum
Side		Votes	%
	First Past the Post	26,835	55.4
	Mixed member proportional	21,629	44.6
	Total valid votes	48,464	100.0

• Elections Ontario Past Election Results
• Map of riding for 2018 election

43°33′N 80°15′W / 43.550°N 80.250°W / 43.550; -80.250