Poll of polls: voting intention over time

Average of all polls over a moving 14-day period, pollsters weighted equally

Con

Lab

Lib Dem

Brexit

Green

Others (inc. SNP and Plaid Cymru)

Boris Johnson becomes PM

40%

39%

30

27

20

16

10

9

5

3

0

May

Jun

Jul

Aug

Sep

Oct

Nov

Average of all polls over a moving 14-day period, pollsters weighted equally

Con

Lab

Lib Dem

Brexit

Green

Others (inc. SNP and Plaid Cymru)

Boris Johnson becomes PM

40%

39%

30

27

20

16

10

9

5

3

0

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov