U.K. Prime Minister Liz Truss Battles to Hang On After Budget U-Turn

LONDON—Having fired her chancellor of the exchequer days ago, U.K. Prime Minister Liz Truss must now battle to save her own job after what many political analysts and members of her own party regard as the worst start to a British premiership in modern times.

Ms. Truss’s popularity rating is the lowest of any British prime minister since the early 1990s, according to polls, after a turbulent few weeks that saw her plan to boost growth through the biggest tax cuts in a generation cause turmoil on U.K. financial markets, forcing the new leader to retreat from her signature economic program—the pillar of her campaign to replace ousted former Prime Minister Boris Johnson just six weeks ago.