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