Labour support was at its lowest in 1983 when the party polled 27.6% of the vote under Michael Foot

Labour vote share, percentage

50%

1979

36.9

1983

27.6

1987

30.8

1992

34.7

1997

43.2

2001

40.7

2005

35.2

2010

29.0

2015

30.4

Number of votes cast, millions

13.52

11.51

11.56

10.72

10.03

9.55

9.35

8.46

8.61

1979

83

87

92

97

01

05

10

15

Labour vote share, percentage

Number of votes cast, millions

50%

13.52

1979

36.9

11.51

11.56

1983

27.6

10.72

10.03

9.55

1987

30.8

9.35

8.46

8.61

1992

34.7

1997

43.2

2001

40.7

2005

35.2

2010

29.0

2015

30.4

1979

83

87

92

97

01

05

10

15