Who won the Lagan Valley constituency election in 2017?

Democratic Unionist Party gained Lagan Valley constituency at the 8 June 2017 General Election, taking the seat from Alliance Party. Democratic Unionist Party won with a majority of 19,229 votes (42.8%). Turnout was 62.1%.

What was the swing in Lagan Valley at the 2017 election?

The swing in Lagan Valley was 27.2% from ALL to DUP — a modest shift towards DUP. Swing is calculated using the Butler two-party formula: the average of the change in winner's vote share and the fall in the runner-up's vote share compared to the previous election here.

What does swing mean in UK elections?

Swing measures how much support has shifted between two parties compared to a previous election. The Butler swing formula — used in British election reporting since the 1950s — takes the average of the gain in the winner's vote share and the loss in the runner-up's. A 5% swing is considered large at ward level; anything above 10% is exceptional. The swing figure for Lagan Valley in 2017 is shown in the statistics above.

DUP GAIN from ALL: Lagan Valley — 2017 General Election Result

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DUP GAIN from ALL: Lagan Valley — 2017 General Election Result | WIN326 — VPNews Elections

Democratic Unionist Party gained Lagan Valley constituency from Alliance Party on 8 June 2017. The Democratic Unionist Party majority was 19,229 votes (42.8%). Turnout was 62.1%. The swing was 27.2% from ALL to DUP.

Previous Results — Lagan Valley Constituency

Election	Winner	Majority	Turnout	Swing
4 July 2024 general	ALLGAIN	2,959	59.7%	+10.2%
12 December 2019 general	DUPGAIN	6,499	60.0%	+10.2%

Frequently Asked Questions — Lagan Valley Constituency

Who won the Lagan Valley constituency election in 2017?: Democratic Unionist Party gained Lagan Valley constituency at the 8 June 2017 General Election, taking the seat from Alliance Party. Democratic Unionist Party won with a majority of 19,229 votes (42.8%). Turnout was 62.1%.
What was the swing in Lagan Valley at the 2017 election?: The swing in Lagan Valley was 27.2% from ALL to DUP — a modest shift towards DUP. Swing is calculated using the Butler two-party formula: the average of the change in winner's vote share and the fall in the runner-up's vote share compared to the previous election here.
What does swing mean in UK elections?: Swing measures how much support has shifted between two parties compared to a previous election. The Butler swing formula — used in British election reporting since the 1950s — takes the average of the gain in the winner's vote share and the loss in the runner-up's. A 5% swing is considered large at ward level; anything above 10% is exceptional. The swing figure for Lagan Valley in 2017 is shown in the statistics above.