Nikki Haley says she will vote for Donald Trump in 2024 election

U-turn by ex-president's most enduring rival during Republican primaries provokes swift backlash

Nikki Haley, who emerged as Donald Trump's most enduring rival and trenchant critic during the Republican primary elections, has said she intends to vote for the former US president in November.

Haley was speaking at the Hudson Institute thinktank in Washington on Wednesday, her first public appearance since dropping out of the race in March. She was asked whether Joe Biden or Trump would do a better job on national security issues.