User:WilliamF1two/Constituencies by county

1: Richard Bell defected from Labour to the Liberal Party in 1904, leaving the Liberals with seven seats and Labour with none.
2: John Hancock (Mid Derbyshire) defected from the Liberal Party to Labour in 1909, leaving the Liberals with six seats and Labour with one.
3: Henry Petty-Fitzmaurice defected from the Liberal Unionist Party to the Conservative Party in 1912, leaving the Conservatives with two seats and the Liberal Unionists with none.
4: The 1913 Chesterfield by-election was won by Barnet Kenyon (Liberal-Labour), gaining the seat from Labour. This left Labour with three seats and Liberal-Labour with one.
5: WE Harvey (North East Derbyshire) defected from Labour to the Liberal Party in March 1914, leaving the Liberals as the largest party with four seats, and Labour with two.
6: The May 1914 North East Derbyshire by-election was won by Harland Bowden (Conservative), gaining the seat from the Liberal Party. This left the Liberals and Conservatives as the joint largest parties with three seats each.
7: John Hancock defected from Labour to Liberal-Labour in 1915, leaving Liberal-Labour with two seats and Labour with one.
8: JH Thomas defected from Labour to National Labour in August 1931, leaving Labour with seven seats and National Labour with one.
9: The 1936 Derby by-election was won by Philip Noel-Baker (Labour), gaining the seat from National Labour. This left Labour with five seats and National Labour with none.
10: The 1944 West Derbyshire by-election was won by Charles Frederick White (Independent Labour), gaining the seat from the Conservative Party. This left Labour as the largest party with five seats, the Conservatives with four, and Independent Labour with one.
11: Chris Williamson (Derby North) was suspended from the Labour Party between February and June 2019, and again from September 2019. During his suspensions, this left Labour with four seats, and Williamson as the sole indepedent.

1: The 1891 Harborough by-election was won by Paddy Logan (Liberal), gaining the seat from the Conservative Party. This left the Liberals as the largest party with four seats, and the Conservatives with three.
2: The 1894 Leicester by-election was won by Henry Broadhurst (Liberal-Labour) and Walter Hazell (Liberal), gaining one of the seats from the Liberals. This left the Liberals with four seats and Liberal-Labour with one.
3: The March 1906 Leicester by-election was won by Franklin Thomasson (Liberal), gaining the seat from Liberal-Labour. This left the Liberals with five seats, and Liberal-Labour with none.
4: The March 1922 Leicester East by-election was won by George Banton (Labour), gaining the seat from Coalition Liberal. This left Labour and the Coalition Liberals with one seat each.
5: The 1927 Bosworth by-election was won by William Edge (Liberal), gaining the seat from the Conservative Party. This left the Conservatives with five seats and the Liberals with one.
6: The 1967 Leicester South West by-election was won by Tom Boardman (Conservative), gaining the seat from Labour. This left Labour and the Conservatives with four seats each.
7: Tom Bradley defected from Labour to the Social Democratic Party in 1981, leaving Labour with two seats and the SDP with one.
8: The 2004 Leicester South by-election was won by Parmjit Singh Gill (Liberal Democrats), gaining the seat from Labour. This left Labour with four seats and the Liberal Democrats with one.
9: Claudia Webbe (Leicester East) was suspended from the Labour Party in 2020, and ultimately expelled in 2021, leaving Labour with two seats and Webbe as the sole independent.
10: Andrew Bridgen had the Conservative whip withdrawn in January 2023, and was ultimately expelled from the party in April 2023, leaving the Conservatives with six seats and Bridgen as one of two independents. He joined the Reclaim Party in May 2023, becoming their sole MP. He resigned from Reclaim in December 2023, subsequently once again sitting as an independent.

1: Edward Heneage (Great Grimsby), Henry Meysey-Thompson (Brigg) and Joseph Ruston (Lincoln) all defected from the Liberal Party to the Liberal Unionist Party in June 1886, leaving the Liberals with four seats and the Liberal Unionists with three.
2: The 1887 Spalding by-election was won by Halley Stewart (Liberal), gaining the seat from the Conservative Party. This left the Conservatives with eight seats and the Liberals with two.
3: The 1893 Great Grimsby by-election was won by Edward Heneage (Liberal Unionist), gaining the seat from the Liberal Party. This left the Liberals with six seats and the Liberal Unionists with one.
4: The 1894 Brigg by-election was won by John Maunsell Richardson (Conservative), gaining the seat from the Liberal Party. This left the Liberals and Conservatives with five seats each.
5: George Doughty (Great Grimsby) defected from the Liberal Party to the Liberal Unionist Party in 1898, and resigned his seat, triggering a by-election, which he won. This left the Liberals and Liberal Unionists with three seats each.
6: The 1907 Brigg by-election was won by Berkeley Sheffield (Conservative), gaining the seat from the Liberal Party. At a similar time, Leslie Renton (Gainsborough) defected from the Liberals to the Liberal Unionist Party. This left the Liberals with six seats, the Conservatives with three, and the Liberal Unionists with two.
7: George Doughty defected from the Liberal Unionist Party to the Conservative Party in 1912, leaving the Conservatives with five seats and the Liberal Unionists with none.
8: The 1920 Louth by-election was won by Thomas Wintringham (Liberal), gaining the seat from the Conservative Party. This left the Conservatives with seven seats and the Liberals with one.
9: The July 1924 Holland with Boston by-election was won by Arthur Dean (Conservative), gaining the seat from Labour. This left the Conservatives with six seats and Labour with none.
10: The March 1929 Holland with Boston by-election was won by James Blindell (Liberal), gaining the seat from the Conservative Party. This left the Conservatives with seven seats and the Liberals with one.
11: The 1942 Grantham by-election was won by Denis Kendall (Independent), gaining the seat from the Conservative Party. This left the Conservatives with six seats and Kendall as the sole independent.
12: Dick Taverne (Lincoln) defected from Labour to the Democratic Labour Party in 1973, and resigned his seat, triggering a by-election, which he won. This left Labour with two seats and Democratic Labour with one.
13: Quentin Davies (Grantham and Stamford) defected from the Conservative Party to Labour in 2007, leaving the Conservatives with five seats and Labour with two.
14: Nick Boles (Grantham and Stamford) resigned the Conservative whip in April 2019, leaving the Conservatives with five seats and Boles as the sole independent.

1: The 1889 Peterborough by-election was won by Alpheus Morton (Liberal), gaining the seat from the Liberal Unionist Party. This left the Liberals with five seats and the Liberal Unionists with none.
2: Edward FitzRoy defected from the Conservative Party to the National Party in 1917, before returning to the Conservatives in 1918. During his time as a National, this left the Conservatives and Nationals with one seat each.
3: Leo Chiozza Money (East Northamptonshire) defected from the Liberal Party to Labour in November 1918, leaving the Liberals with four seats and Labour with one.
4: The January 1928 Northampton by-election was won by Cecil Malone (Labour), gaining the seat from the Conservative Party. This left the Conservatives with three seats and Labour with two. Edward FitzRoy (Daventry) was elected Speaker of the House of Commons in June 1928, leaving the Conservatives with two seats.
5: The 1943 Daventry by-election was won by Reginald Manningham-Buller (Conservative), winning a seat previously held by Edward FitzRoy, the Speaker of the House of Commons. This left the Conservatives with five seats.
6: The 1969 Wellingborough by-election was won by Peter Fry (Conservative), gaining the seat from Labour. This left the Conservatives as the largest party with three seats, and Labour with two.
7: The 2012 Corby by-election was won by Andy Sawford (Labour), gaining the seat from the Conservative Party. This left the Conservatives with six seats and Labour with one.
8: The February 2024 Wellingborough by-election was won by Gen Kitchen (Labour), gaining the seat from the Conservative Party. This left the Conservatives with six seats and Labour with one.

1: George Spencer (Broxtowe) defected from Labour to the Liberal Party in 1927, leaving Labour with two seats and the Liberals with one.
2: Malcolm MacDonald (Bassetlaw) and Holford Knight (Nottingham South) defected from Labour to National Labour in August 1931, leaving Labour with three seats and National Labour as the third largest party with two.
3: The 1977 Ashfield by-election was won by Tim Smith (Conservative), gaining the seat from Labour. This left Labour with six seats and the Conservatives with four.
4: Patrick Mercer (Newark) resigned the Conservative whip in 2013, leaving the Conservatives with three seats and Mercer as the sole independent. The 2014 Newark by-election was won by Robert Jenrick (Conservative), leaving the Conservatives with four seats.
5: Anna Soubry (Conservative, Broxtowe) and Chris Leslie (Labour, Nottingham East) defected to Change UK in February 2019, leaving Labour with five seats, the Conservatives with four, and Change UK with two.
6: Kenneth Clarke had the Conservative whip withdrawn in September 2019, leaving the Conservatives with three seats and Clarke as the sole independent.
7: Lee Anderson (Ashfield) defected from the Conservative Party to Reform UK in March 2024, leaing the Conservatives with seven seats and Reform UK with one.

1: The Tories became the Conservative Party in 1834.
2: On petition, Henry Stuart (Conservative, Bedford) was unseated and Samuel Crawley (Whig) was declared elected in his place. This left the Conservaties and Whigs with two seats each.
3: The March 1847 Bedfordshire by-election was won by Charles Russell (Whig), gaining the seat from the Conservative Party. This left the Conservatives with three seats and the Whigs with one.
4: The 1963 Luton by-election was won by William Howie (Labour), gaining the seat from the National Liberal Party. This left the National Liberals and Labour with one seat each.
5: Kelvin Hopkins was suspended from the Labour Party in November 2017, leaving Labour with two seats and Hopkins as the sole independent.
6: Gavin Shuker defected from Labour to Change UK in February 2019, leaving Labour and Change UK with one seat each. Shuker defected again to The Independents in June 2019, becoming their sole MP.
7: The 2023 Mid Bedfordshire by-election was won by Alistair Strathern (Labour), gaining the seat from the Conservative Party. This left Labour as the largest party with four seats, and the Conservatives with two.

1: The writ was suspended for both seats in Cambridge in 1853, both of which were held by the Conservative Party. This left the Conservatives with seven seats. The resulting 1854 by-election was won by Robert Adair and Francis Mowatt (both Radical), who became the Radicals only two MPs.
2: On scrutiny, John Heathcote was declared unduly elected in July 1857, leaving the Whigs with one seat.
3: The 1884 Cambridgeshire by-election was won by Arthur Thornhill (Conservative), gaining the seat from the Liberal Party. This left the Conservatives with five seats and the Liberals with three.
4: The 1891 Wisbech by-election was won by Arthur Brand (Liberal), gaining the seat from the Conservative Party. This left the Conservatives with four seats and the Liberals with two.
5: The 1903 Newmarket by-election was won by Charles Rose (Liberal), gaining the seat from the Conservative Party. This left the Conservatives with four seats and the Liberals with two.
6: The 1913 Newmarket by-election was won by John Denison-Pender (Conservative), gaining the seat from the Liberal Party. This left the Conservatives with four seats and the Liberals with two.
7: The 1967 Cambridge by-election was won by David Lane (Conservative), gaining the seat from Labour. This left the Conservatives with three seats and Labour with none.
8: The National Liberal Party merged into the Conservative Party in 1968, leaving the Conservatives with four seats.
9: The 1973 Isle of Ely by-election was won by Clement Freud (Liberal), gaining the seat from the Conservative Party. This left the Conservatives with three seats and the Liberals with one.
10: Fiona Onasanya (Peterborough) was expelled from the Labour Party in 2018, leaving Labour with one seat and Onasanya as the sole independent. She was subsequently recalled, and the subsequent by-election in June 2019 was won by Lisa Forbes (Labour), leaving Labour again with two seats.
11: Heidi Allen (South West Cambridgeshire) defected from the Conservative Party to Change UK in February 2019, leaving the Conservatives with four seats and Change UK with one. Allen defected again to the Liberal Democrats in June 2019, becoming their sole MP.

1: The writ was suspended for both seats in Maldon in March 1853, both of which were held by the Conservative Party. This left the Conservatives with eight seats. The June 1853 Harwich by-election was won by John Bagshaw (Whig), gaining the seat from the Conservative Party. This left the Conservatives with seven seats and the Whigs with one. The 1854 Maldon by-election was won by George Peacocke and John Bramley-Moore (both Conservative), leaving the Conservatives with nine seats. The February 1857 Colchester by-election was won by John Gurdon Rebow (Radical), gaining the seat from the Conservative Party. This left the Conservatives with eight seats and the Radicals with one.
2: The December 1857 Harwich by-election was won by Robert John Bagshaw (Whig), gaining the seat from an Independent Whig. This left the Whigs with four seats and the Independent Whigs with none.
3: The March 1859 Harwich by-election was won by Henry Jervis-White-Jervis (Conservative), gaining the seat from the Whigs. This left the Conservatives with six seats and the Whigs with three.
4: The 1860 Harwich by-election was won by Richard Rowley (Conservative), gaining the seat from the Liberal Party. This left the Conservatives with nine seats and the Liberals with one.
5: The 1870 Colchester by-election was won by Alexander Learmonth (Conservative), gaining the seat from the Liberal Party. This left the Conservatives with six seats and the Liberals with four.
6: The 1878 Maldon by-election was won by George Courtauld (Liberal), gaining the seat from the Conservative Party. This left the Conservatives with nine seats and the Liberals with one.
7: Keir Hardie formed the Independent Labour Party in 1893, becoming their sole MP.
8: The February 1895 Colchester by-election was won by Weetman Pearson (Liberal), gaining the seat from the Conservative Party. This left the Conservatives with six seats and the Liberals with four.
9: The 1897 Walthamstow by-election was won by Sam Woods (Liberal), gaining the seat from the Conservative Party. This left the Conservatives with eight seats and the Liberals with three.
10: The March 1919 Leyton West by-election was won by Alfred Newbould (Liberal), gaining the seat from the Conservative Party. At a similar time, Jack Jones took the Labour Party whip and ceased sitting for the National Socialist Party. This left the Conservatives with eleven seats, Labour and the Liberals with two each, and the National Socialists with none.
11: Cecil Malone (Leyton East) defected from the Coalition Liberals to the British Socialist Party in November 1919, leaving the Coalition Liberals with two seats and the British Socialists with one. The British Socialist Party became the Communist Party of Great Britain in 1920.
12: Cecil Beck defected from the Liberal Party to the Coalition Liberals in December 1919, leaving the Coalition Liberals with three seats and the Liberals with one. Beck resigned the Coalition Liberal whip in 1921, leaving them with two seats and Beck as the sole independent.
13: Winston Churchill (Epping) and Hamar Greenwood (Walthamstow East) took the Conservative Party whip in November 1924 and ceased sitting as Constitutionalists. This left the Conservatives with fifteen seats and the Constitutionalists with none.
14: The 1926 East Ham North by-election was won by Susan Lawrence (Labour), gaining the seat from the Conservative Party. This left the Conservatives with fourteen seats and Labour with five.
15: The 1934 Upton by-election was won by Ben Gardner (Labour), gaining the seat from the Conservative Party. This left the Conservatives with fourteen seats and Labour with five.
16: The 1942 Maldon by-election was won by Tom Driberg (Independent), gaining the seat from the Conservative Party. This left the Conservatives with ten seats and Driberg as the sole independent.
17: The April 1945 Chelmsford by-election was won by Ernest Millington (Common Wealth), gaining the seat from the Conservative Party. This left the Conservatives with nine seats and Common Wealth with one.
18: Ernest Millington defected from the Common Wealth Party to Labour in 1946, leaving Labour with twenty-two seats and Common Wealth with none.
19: Leslie Solley (Thurrock) was expelled from the Labour Party in 1949 and joined the Labour Independent Group, leaving Labour with twenty-one seats and the Labour Independent Group with one.
20: The 1967 Walthamstow West by-election was won by Fred Silvester (Conservative), gaining the seat from Labour. This left Labour with fourteen seats and the Conservatives with eleven. The 1969 Walthamstow East by-election was won by Michael McNair-Wilson (Conservative), gaining the seat from Labour. This left Labour and the Conservatives with thirteen seats each.
21: The National Liberal Party merged into the Conservative Party in 1968, leaving the Conservatives with twelve seats.
22: Bob Spink (Castle Point) defected from the Conservative Party to UKIP in April 2008, leaving the Conservatives with twelve seats and UKIP with one. Spink left UKIP in November 2008, subsequently sitting as the sole independent.
23: Douglas Carswell (Clacton) defected from the Conservative Party to UKIP in 2014, and resigned his seat, triggering a by-election, which he won. This left the Conservatives with sixteen seats and UKIP with one.
24: Douglas Carswell left UKIP in March 2017, leaving UKIP with no seats and Carswell as the sole independent.