Coordinates: 53°42′59″N 1°51′36″W / 53.716347°N 1.860026°W
One third of Calderdale Metropolitan Borough Council in West Yorkshire, England is elected each year, followed by one year without election.[1]
| By-election[2] | Date | Incumbent party | Winning party | ||
|---|---|---|---|---|---|
| Brighouse by-election | 22 May 1974 | Conservative | Labour | ||
| Lightcliffe by-election | 18 November 1977 | Conservative | Conservative | ||
| Hebden Bridge by-election | 24 August 1978 | Conservative | Conservative | ||
| Town by-election | 8 November 1979 | Conservative | Labour | ||
| Skircoat by-election | 18 December 1980 | Conservative | Conservative | ||
| St. John's by-election | 27 August 1982 | Labour | Labour | ||
| Luddenden Foot by-election | 18 August 1983 | Conservative | Alliance | ||
| Mixenden by-election | 26 January 1984 | Labour | Labour | ||
| Todmorden by-election | 24 May 1984 | Alliance | Alliance | ||
| Northowram and Shelf by-election | 6 September 1984 | Conservative | Conservative | ||
| Calder Valley by-election | 14 February 1985 | Alliance | Alliance | ||
| Hipperholme and Lightcliffe by-election | 23 May 1985 | Conservative | Conservative | ||
| Ryburn by-election | 28 November 1985 | Conservative | Conservative | ||
| St. John's by-election | 3 July 1986 | Labour | Labour | ||
| Brighouse by-election | 9 October 1986 | Labour | Labour | ||
| Rastrick by-election | 24 September 1987 | Alliance | Conservative | ||
| Town by-election | Labour | Labour | |||
| Town by-election | 16 February 1989 | Labour | Labour | ||
| Calder Valley by-election | 20 April 1989 | Alliance | Labour | ||
| St. John's by-election | 12 October 1989 | Labour | Labour | ||
| Town by-election | 27 September 1990 | Labour | Conservative | ||
| Brighouse by-election | 8 November 1990 | Conservative | Labour | ||
| Luddenden Foot by-election | 28 August 1991 | Liberal Democrats | Liberal Democrats | ||
| Ryburn by-election | 22 November 1991 | Conservative | Conservative | ||
| St. John's by-election | 19 November 1992 | Labour | Labour | ||
| Calder Valley by-election | 9 September 1993 | Liberal Democrats | Liberal Democrats | ||
| Ryburn by-election | 3 August 1995 | Conservative | Labour | ||
| Todmorden by-election | 1 May 1997 | Labour | Liberal Democrats | ||
| Todmorden by-election | 19 January 1998 | Labour | Liberal Democrats | ||
| Elland by-election | 29 October 1999 | Liberal Democrats | Liberal Democrats | ||
| Calder Valley by-election | 5 December 2002 | Liberal Democrats | Liberal Democrats | ||
| Mixenden by-election | 23 January 2003 | Labour | BNP | ||
| Rastrick by-election | 6 February 2003 | Conservative | Conservative | ||
| Mixenden by-election | 16 October 2003 | Liberal Democrats | Liberal Democrats | ||
| Illingworth and Mixenden by-election | 22 February 2007 | Labour | Labour | ||
| Skircoat by-election | 2 April 2009 | Conservative | Conservative | ||
| Warley by-election | 19 July 2012 | Liberal Democrats | Liberal Democrats | ||
| Hipperholme and Lightcliffe by-election | 6 April 2017 | Conservative | Conservative | ||
| Rastrick by-election | 8 June 2017 | Conservative | Conservative | ||
| Todmorden by-election | Labour | Labour | |||
| Park by-election | 2 September 2021 | Labour | Labour | ||
| Ryburn by-election | Independent | Conservative | |||
The January 2003 Mixenden by-election has become synonymous as an example of a likely Condorcet loser winning.
