Percentage point swing
Lab to Lib 1983 Bermondsey
44.2
Con to Ukip 2014 Clacton
44.1
Lab to SNP 1967 Hamilton
37.9
Lab to Respect 2012 Bradford West
36.6
Con to Lab 1994 Dudley West
29.2
Con to Ukip 2014 Rochester and Strood
28.3
Con to Lib Dem 2021 Chesham and Amersham
25.1
0
10
20
30
40
50
Percentage point swing
Lab to Lib 1983 Bermondsey
44.2
Con to Ukip 2014 Clacton
44.1
Lab to SNP 1967 Hamilton
37.9
Lab to Respect 2012 Bradford West
36.6
Con to Lab 1994 Dudley West
29.2
Con to Ukip 2014 Rochester and Strood
28.3
Con to Lib Dem 2021 Chesham and Amersham
25.1
0
10
20
30
40
50