Corby by election, 2012

Background

Formed in 1983, the Corby constituency had been held by the Labour Party since 1997, but was captured by the Conservative candidate, author Louise Mensch (elected under her maiden name, Louise Bagshawe), at the 2010 general election. In an email to the Prime Minister David Cameron on 6 August 2012, Mrs Mensch confirmed her intention to move to New York City to spend time with her new husband, Peter Mensch, whose work is there, and their family. Louise Mensch was appointed Steward and Bailiff of the Manor of Northstead, thereby resigning her seat in the House of Commons, on 29 August 2012.

All registered Parliamentary electors (i.e. British, Irish and Commonwealth citizens living in the UK and British citizens living overseas) who were aged 18 or over on 15 November 2012 and were on the electoral register for the constituency, were entitled to vote in the by-election. The deadline for voters to register to vote in the by-election was midnight on Wednesday 31 October 2012. However, those who qualified as an anonymous elector had until midnight on Thursday 8 November 2012 to register to vote.

Election campaign

Ed Miliband launched the Labour campaign in the East Northamptonshire town of Thrapston rather than the traditional Labour stronghold of Corby.

In an interview with the Northamptonshire Telegraph at the campaign launch in Corby, UK Independence Party leader Nigel Farage said: “We intend to put together a serious campaign here."

A poll conducted 12–18 October by Lord Ashcroft in the constituency found 54% for Labour, 32% for the Conservatives, 10% for the Liberal Democrats and 8% for other candidates.

James Delingpole, a Daily Telegraph journalist who is sceptical of anthropogenic global warming, stated his intention to run as an independent, on a platform opposing wind farms. Delingpole stated this ambition on 17 September 2012 and met with prospective local voters. However, he never formally applied, pulling out after support from the Conservative energy minister, John Hayes, opposing onshore wind farms, which caused a minor rift between Conservative and Liberal Democrat ministers. Chris Heaton-Harris, (Con, Daventry) and campaign manager for the party at the by-election, was secretly filmed saying he had encouraged Delingpole to run as a "plan" whereby Delingpole would say he would stand, though he would never actually do so, in order to "cause some hassle" and thus promote opposition to wind farms. Lewes councillor, Donna Edmonds (Con) set up Delingpole's wind-farm campaign website. Both Heaton-Harris and Edmonds argued they had not broken any party rules on supporting an opposition candidate on the grounds that Delingpole never formally became a candidate. The news of the secret footage broke before the election in the national press.

Result

The total ballots issued were 35,775, and there were 110 spoilt ballots. The result was the second largest numerical majority ever in the Corby constituency (for any party) since its creation in 1983 (only 1997 was higher). In percentage terms, the Labour majority is only slightly lower than that in 1997 (21.8% compared to 22.0%). The result also represented the highest ever vote and share for UKIP at a parliamentary by-election at the time (the highest share record was broken at Rotherham two weeks later, and the record for largest number of UKIP votes polled in a by-election was broken at Eastleigh in February 2013). Corby was also the fourth by-election (out of nine in Great Britain up to that time) of the 2010 parliament at which the Liberal Democrats lost their deposit.

This was the first seat gained by Labour in a by-election since the Wirral South by-election in 1997.