After coming under fierce fire in Scotland for making a policy U-turn, polls show Conservative Liz Truss ahead in the race to become Britain's next prime minister. A new survey said the foreign secretary had extended her lead over former finance minister Rishi Sunak as Tory members begin voting for a new party leader by post and online this week. 60 per cent of party members said they would vote for her in comparison to 26 per cent who supported Sunak, according to a YouGov poll for The Times.