The Corby by-election was a by-election held in England on 15 November 2012 to elect a new Member of Parliament (MP) for the constituency of Corby in the House of Commons of the United Kingdom. The election was held on the same day as by-elections in Cardiff South and Penarth and Manchester Central, the first direct election for the post of Mayor of Bristol, and the first Police and Crime Commissioner elections. Andy Sawford, the Labour Party candidate, won with 48% of the vote. The Conservatives' and Liberal Democrats' vote dropped significantly and UKIP came third with their highest-ever vote in a parliamentary by-election to that date.