2022 Merton London Borough Council election

Since its formation, Merton has variously been under Labour control, Conservative control and no overall control. In the previous council election in 2018, Labour and the Conservatives lost seats to the Liberal Democrats. Labour won 34 seats with 46.9% of the vote across the borough, while the Conservatives won 17 seats with 31.5% of the vote. The Liberal Democrats rose to six seats with 14.6% of the vote and the Merton Park Ward Independent Residents continued to hold three seats with 3.3% of the vote across the borough.^[1][2]

In May 2019, Mark Kenny, a Labour councillor for Cannon Hill, resigned citing health reasons.^[3] A by-election to fill the seat was held in June 2019, which was won by the Liberal Democrat candidate Jenifer Gould.^[4] One of the Liberal Democrat councillors for West Barnes, Carl Quilliam who had previously lost the contest to become the Liberal Democrat Parliamentary Candidate for Wimbledon in 2019, defected to the Labour Party in June 2020 citing the national leadership of Keir Starmer.^[5] In March 2021, Kelly Braund, a Labour councillor for St Helier, resigned because she was moving to Scotland.^[6] At the subsequent by-election, the seat was held for Labour by Helen Dollimore.^[7]

The Labour councillor Mark Allison succeeded Stephen Alambritis as leader of the council in November 2020.^[8]

Along with most other London boroughs, Merton was subject to a boundary review ahead of the 2022 election. The Local Government Boundary Commission for England concluded that the council should have 57 seats, falling from the previous 60 seats, and produced new election boundaries following a period of consultation.^[9]

Merton, like other London borough councils, elects all of its councillors at once every four years. The election took place by multi-member first-past-the-post voting, with each ward being represented by two or three councillors. Electors had as many votes as there are councillors to be elected in their ward, with the top two or three being elected.

All registered electors (British, Irish, Commonwealth and European Union citizens) living in London aged 18 or over were entitled to vote in the election. People who lived at two addresses in different councils, such as university students with different term-time and holiday addresses, were entitled to be registered for and vote in elections in both local authorities.^[10] Voting in-person at polling stations took place from 7:00 to 22:00 on election day, and voters were able to apply for postal votes or proxy votes in advance of the election.^[10]

2022 Merton London Borough Council election

Party		Seats	Gains	Losses	Net gain/loss	Seats %	Votes %	Votes	+/−
	Labour	31			3	54.4	42.3	70,423	-4.6
	Liberal Democrats	17			11	29.8	25.0	41,655	+10.4
	Conservative	7			10	12.3	26.1	43,382	-5.4
	Merton Park RA	2			1	3.5	2.1	3,576	-1.2
	Green	0	0	0		0.0	4.3	7,161	+1.5
	TUSC	0	0	0		0.0	0.1	154	+0.1

Due to the boundary changes, which reduced the number of seats from 60 to 57, reporting the gains/losses by party is not straightforward. The BBC used a calculation which takes into account the changes relative to the expected previous result under the new boundaries. These give: Labour -4, Liberal Democrats +12, Conservatives -8, Merton Park Independents: no change.^[11]

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  Council composition after the 2018 election and before the 2022 election
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  Council composition after the 2022 election