Frequently Asked Questions — Portsmouth North Constituency

Who won the Portsmouth North constituency election in 2019?

Conservative held Portsmouth North constituency at the 12 December 2019 General Election. Conservative won with a majority of 15,780 votes (34.4%). Turnout was 64.4%.

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 Portsmouth North in 2019 is shown in the statistics above.