Frequently Asked Questions — Ochil and South Perthshire Constituency

Who won the Ochil and South Perthshire constituency election in 2019?

Scottish National Party gained Ochil and South Perthshire constituency at the 12 December 2019 General Election, taking the seat from Conservative. Scottish National Party won with a majority of 4,498 votes (7.8%). Turnout was 73.4%.

What was the swing in Ochil and South Perthshire at the 2019 election?

The swing in Ochil and South Perthshire was 7.0% from CON to SNP — a significant shift towards SNP. 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 Ochil and South Perthshire in 2019 is shown in the statistics above.