LONDON — British Prime Minister Liz Truss quit Thursday after a tumultuous and historically brief term marred by economic policies that roiled financial markets and a rebellion in her political party that obliterated her authority.
Truss became the third Conservative prime minister to be toppled in as many years, extending the instability that has shaken Britain since it broke off from the European Union and leaving its leadership in limbo as the country faces a cost-of-living crisis and looming recession.
“I cannot deliver the mandate on which I was elected by the Conservative Party,” Truss, 47, said outside her 10 Downing Street office.
Financial markets breathed a sigh of relief, but Truss leaves a divided ruling party seeking a leader who can unify its warring factions. Truss, who said she will remain in office until a replacement is chosen, has been prime minister for just 45 days and will go almost certainly down as the shortest-serving leader in British history. George Canning died in office in 1827 after 119 days.
The Conservative Party said it would choose a successor by the end of next week. Potential contenders include: former Treasury chief Rishi Sunak, who lost to Truss in the last leadership contest; House of Commons leader Penny Mordaunt; Defense Secretary Ben Wallace; and Boris Johnson, the former prime minister ousted in July over a series of ethics scandals.
The low-tax, low-regulation economic policies that got Truss elected by her party proved disastrous in the real world at a time of soaring inflation and weak growth.
Her Sept. 23 economic plan included a raft of tax cuts that investors worried Britain couldn’t afford. It pummeled the value of the pound and drove up the cost of mortgages, causing economic pain for people and businesses already struggling from an economy yet to emerge from the pain of the pandemic.
That financial tumult led to the replacement of Truss’ Treasury chief, multiple policy U-turns and a breakdown of discipline in the governing Conservative Party.
Truss resigned just a day after vowing to stay in power, saying she was “a fighter and not a quitter.” But she couldn’t hold on any longer after a senior minister quit her government amid a barrage of criticism and a vote in the House of Commons Wednesday descended into chaos and acrimony.
“It’s time for the prime minister to go,” Conservative lawmaker Miriam Cates said, echoing the sentiments of many others.
The pound rose about 1% Thursday to around $1.13 after Truss’ resignation.
Where the Conservative Party goes from here is not clear. Its myriad factions — from hard-right Brexiteers to centrist “One Nation” Tories — are at each other’s throats.
“Nobody has a route plan. It’s all sort of hand-to-hand fighting on a day-to-day basis,” Conservative lawmaker Simon Hoare told the BBC on Thursday before Truss resigned.
Newspapers that usually support the Conservatives were vitriolic. An editorial in the Daily Mail on Thursday was headlined: “The wheels have come off the Tory clown car.”
Truss’ departure on Thursday sparked jubilation for the tabloid Daily Star, which had set up a livestream last week featuring a photo of the prime minister beside a head of lettuce to see which would last longer.
“This lettuce outlasted Liz Truss!” it proclaimed Thursday.