Frequently Asked Questions — Calder Valley Constituency

Who won the Calder Valley constituency election in 2010?

Conservative held Calder Valley constituency at the 6 May 2010 General Election. Conservative won with a majority of 6,431 votes (12.4%). Turnout was 67.3%.

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 Calder Valley in 2010 is shown in the statistics above.