The district was created in 1978 from Colchester, and was called Colchester South until 1993. In 1993, the name was changed to Colchester-Musquodoboit Valley and it gained the Salmon River and Musquodoboit Valley areas from Bedford-Musquodoboit Valley, and Millbrook 27 from Truro-Bible Hill.^[1] It includes the southern half of Colchester County (not including the Truro area) plus the Musquodoboit Valley region of the Halifax Regional Municipality.

Geography

The landmass of Colchester-Musquodoboit Valley is 3,096 km² (1,195 sq mi).^[2]

Members of the Legislative Assembly

This riding has elected the following members of the Legislative Assembly:

Legislature	Years		Party
64th	2021–present	Larry Harrison	Progressive Conservative
63rd	2017-2021
62nd	2013–2017
61st	2009–2013	Gary Burrill	New Democratic
60th	2006–2009	Brooke Taylor	Progressive Conservative
59th	2003–2006
58th	1999–2003
57th	1998–1999
56th	1993–1998
56th	1993	Ken Streatch	Progressive Conservative
55th	1988-1993	R. Colin Stewart
54th	1984-1988
53rd	1981-1984
52nd	1978-1981

1978 Nova Scotia general election: Colchester South
Party	Candidate	Votes	%	±%
	Progressive Conservative	R. Colin Stewart	3,230	56.28%	–
	Liberal	Ed Lorraine	2,187	38.11%	–
	New Democratic	Chester Rice	322	5.61%	–
Total			5,739	–
Source(s) Source: Nova Scotia Legislature (2021). "Electoral History for Colchester-Musquodoboit Valley" (PDF). nslegislature.ca.

1981 Nova Scotia general election: Colchester South
Party	Candidate	Votes	%	±%
	Progressive Conservative	R. Colin Stewart	3,281	56.48%	0.20%
	Liberal	Laurence Mersereau	1,683	28.97%	-9.14%
	New Democratic	Chester Rice	799	13.75%	8.14%
	Independent	Bob Kirk	46	0.79%	–
Total			5,809	–
Source(s) Source: Nova Scotia Legislature (2021). "Electoral History for Colchester-Musquodoboit Valley" (PDF). nslegislature.ca.

1984 Nova Scotia general election: Colchester South
Party	Candidate	Votes	%	±%
	Progressive Conservative	R. Colin Stewart	3,572	63.85%	7.37%
	Liberal	Fred A. Kennedy	1,530	27.35%	-1.62%
	New Democratic	Bernard A. Gay	492	8.80%	-4.96%
Total			5,594	–
Source(s) Source: Nova Scotia Legislature (2021). "Electoral History for Colchester-Musquodoboit Valley" (PDF). nslegislature.ca.

1988 Nova Scotia general election: Colchester South
Party	Candidate	Votes	%	±%
	Progressive Conservative	R. Colin Stewart	3,855	56.11%	-7.75%
	Liberal	Larry Thomas	2,462	35.83%	8.48%
	New Democratic	Julia A. Skipper	554	8.06%	-0.73%
Total			6,871	–
Source(s) Source: Nova Scotia Legislature (2021). "Electoral History for Colchester-Musquodoboit Valley" (PDF). nslegislature.ca.

1993 Nova Scotia general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Ken Streatch	4,221	45.74%	-10.37%
	Liberal	John David Tilley	3,463	37.52%	1.69%
	New Democratic	Roger J. Hunka	1,545	16.74%	8.68%
Total			9,229	–
Source(s) Source: Nova Scotia Legislature (2021). "Electoral History for Colchester-Musquodoboit Valley" (PDF). nslegislature.ca.

1998 Nova Scotia general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Brooke Taylor	5,122	59.08%	13.35%
	New Democratic	Jim Harpell	1,960	22.61%	5.87%
	Liberal	Dick Steeves	1,587	18.31%	-19.22%
Total			8,669	–
Source(s) Source: Nova Scotia Legislature (2021). "Electoral History for Colchester-Musquodoboit Valley" (PDF). nslegislature.ca.

1999 Nova Scotia general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Brooke Taylor	5,465	67.40%	8.32%
	New Democratic	Jim Harpell	1,591	19.62%	-2.99%
	Liberal	Leo Stacey	1,052	12.97%	-5.33%
Total			8,108	–
Source(s) Source: Nova Scotia Legislature (2021). "Electoral History for Colchester-Musquodoboit Valley" (PDF). nslegislature.ca.

2003 Nova Scotia general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Brooke Taylor	4,695	64.34%	-3.06%
	New Democratic	Kathryn Belzer	1,694	23.22%	3.59%
	Liberal	Joan Barnhill	908	12.44%	-0.53%
Total			7,297	–
Source(s) Source: Nova Scotia Legislature (2021). "Electoral History for Colchester-Musquodoboit Valley" (PDF). nslegislature.ca.

2006 Nova Scotia general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Brooke Taylor	4,790	63.85%	-0.49%
	New Democratic	Gary Burrill	1,891	25.21%	1.99%
	Liberal	Carolyn Matthews	657	8.76%	-3.69%
	Green	Leona MacLeod	164	2.19%	–
Total			7,502	–
Source(s) Source: Nova Scotia Legislature (2021). "Electoral History for Colchester-Musquodoboit Valley" (PDF). nslegislature.ca.

2009 Nova Scotia general election
Party	Candidate	Votes	%	±%
	New Democratic	Gary Burrill	3,697	47.45%	22.24%
	Progressive Conservative	Steve Streatch	2,265	29.07%	-34.78%
	Liberal	Willie Versteeg	1,649	21.16%	12.41%
	Green	Margaret Whitney	181	2.32%	0.14%
Total			7,792	–
Source(s) Source: Nova Scotia Legislature (2021). "Electoral History for Colchester-Musquodoboit Valley" (PDF). nslegislature.ca.

2013 Nova Scotia general election
	Candidate	Votes	%	±%
Progressive Conservative	Larry Harrison	3,304	42.27	+13.28
New Democratic Party	Gary Burrill	2,293	29.33	-18.76
Liberal	Tom Martin	2,220	28.40	+7.79

v t e 2017 Nova Scotia general election
Party	Candidate	Votes	%	±%
	Progressive Conservative	Larry Harrison	3,655	50.57	+8.30
	Liberal	Matthew Rushton	1,947	26.94	-1.46
	New Democratic	Janet Moulton	1,625	22.49	-6.84
Total valid votes			7,227	100
Total rejected ballots			53
Turnout			7,280	51.2
Eligible voters			14,225
	Progressive Conservative hold		Swing		+4.88
Source: Elections Nova Scotia^[3]^[4]

2017 provincial election redistributed results^[5]
Party		Vote	%
	Progressive Conservative	3,650	50.58
	Liberal	1,944	26.94
	New Democratic	1,623	22.49

v t e 2021 Nova Scotia general election
Party	Candidate	Votes	%	±%	Expenditures
	Progressive Conservative	Larry Harrison	4,117	55.13	+4.56	$37,087.10
	Liberal	Rhonda MacLellan	1,913	25.62	-1.32	$32,423.06
	New Democratic	Janet Moulton	1,438	19.26	-3.23	$36,115.07
Total valid votes/Expense limit			7,468	99.60	+0.33	$83,775.96
Total rejected ballots			30	0.40	-0.33
Turnout			7,498	52.36	+1.18
Eligible voters			14,321
	Progressive Conservative hold		Swing		+2.94
Source: Elections Nova Scotia^[6]^[7]

Nova Scotia provincial electoral districts

Current

Historic

to 2021:	Argyle-Barrington Bedford Clare-Digby Preston-Dartmouth Queens-Shelburne
to 2013:	Argyle Cape Breton North Cape Breton Nova Cape Breton South Cape Breton West Clare Cole Harbour Dartmouth South-Portland Valley Digby-Annapolis Guysborough-Sheet Harbour Halifax Clayton Park Halifax Fairview Hammonds Plains-Upper Sackville Preston Queens Richmond Shelburne Truro-Bible Hill
to 2003:	Bedford-Fall River Cape Breton East Cape Breton The Lakes Dartmouth South Dartmouth-Cole Harbour Guysborough–Port Hawkesbury Halifax Bedford Basin Sackville-Beaver Bank Victoria
to 1993:	Annapolis East Annapolis West Colchester South Cumberland Centre Cumberland East Cumberland West Digby Guysborough Halifax Cornwallis Halifax Eastern Shore Halifax St. Margarets Inverness North Inverness South Lunenburg Centre Lunenburg East Sackville
to 1978:	Colchester Halifax Cobequid
to 1967:	Halifax Centre Halifax County Dartmouth Halifax East Halifax North Halifax Northwest Halifax South Halifax West
to 1956:	Kings
to 1949:	Cumberland Hants Pictou
to 1933:	Halifax Richmond and Cape Breton West
to 1925:	Cape Breton