Florida governor Ron DeSantis has suspended his Republican presidential campaign on the eve of the New Hampshire primary and endorsed Donald Trump.

It ends a White House bid that failed to meet expectations that Mr DeSantis would emerge as a serious challenger to the former US president.

“It’s clear to me that a majority of Republican primary voters want to give Donald Trump another chance,” he said in a video posted on X, formerly Twitter.

New Hampshire’s first-in-the-nation primary comes on Tuesday.

The ambitious big-state governor entered the 2024 presidential contest with major advantages in his quest to take on Mr Trump, and early primary polls suggested Mr DeSantis was in a strong position to do just that.

He and his allies amassed a political fortune well in excess of 100 million dollars (£78.7 million), and he boasted a significant legislative record on issues important to many conservatives, such as abortion and the teaching of race and gender issues in schools.

Such advantages did not survive the reality of presidential politics in 2024.

From a high-profile announcement that was plagued by technical glitches to constant upheavals to his staff and campaign strategy, Mr DeSantis struggled to find his footing in the primary.

He lost the Iowa caucuses – which he had vowed to win – by 30 percentage points to Mr Trump.

And now, Mr DeSantis’s political future is in question after suspending his presidential bid after just one voting contest.

The 45-year-old is term limited as Florida governor.