Opponents of Jeremy Corbyn were given fresh reason for concern this week, as the Islington North MP extended his lead in the Labour leadership race.
A YouGov poll showed the left-winger was on course for a huge victory next month, with his three rivals trailing badly.
The poll, commissioned by The Times, put Mr Corbyn up 10 points from a previous survey three weeks ago, with 53 per cent of first-preference votes, enough to give him victory in the first round of voting.
His nearest challenger, Andy Burnham, lagged by 32 per cent, with the poll showing he could count on only 21 per cent of votes, a fall of five points.
Yvette Cooper fell by two points, leaving her with an expected 18 per cent, while Liz Kendall was predicted to gain only eight per cent of votes, having slid by three points.
The survey was conducted among 1,411 Labour supporters. YouGov president Peter Kellner said Mr Corbyn was heading for "a knockout victory".
Ballot papers will be sent out today with voters asked to indicate the candidates they support in numerical order of preference.
The result is due to be announced on September 12.
