The London mayoral race has tightened ahead of polling day tomorrow, with a new survey giving Sadiq Khan a 12 point lead over Tory rival Shaun Bailey.
YouGov s final poll before the capital votes puts the Labour incumbent on 43 per cent in the first round.
That is down four points on last month while Mr Bailey is up one point to 31 per cent.
The numbers suggest Mr Khan is on course to win the contest in a second round run-off with Mr Bailey by 59 per cent to 41 per cent.
Overall, Mr Khan s lead over Mr Bailey has fallen from 19 points to 12 points.