Donald Trump’s return to the White House might also prove to be a win for one of his most visible supporters: Elon Musk.

The world’s richest man spent election night in Florida with Trump at his Mar-a-Lago resort as returns came in.

“The people of America gave @realDonaldTrump a crystal clear mandate for change tonight,” Mr Musk wrote on the social media platform X as Trump’s victory began to appear all but certain.

And at his victory speech at the Palm Beach Convention Center, Trump spent several minutes praising Mr Musk and recounting the successful landing of a rocket manufactured by one of Mr Musk's companies, SpaceX.

Mr Musk threw his support behind the Republican almost immediately after the assassination attempt on Trump in Butler, Pennsylvaniain July.

As one of the president-elect's most important backers, the tech billionaire donated more than $119m (£92m) to fund a Super PAC aimed at re-electing Trump.

He also spent the last weeks before election day running a get-out-the-vote effort in the battleground states, which included a daily giveaway of $1m to voters in those states. The giveaway became the subject of a legal challenge, though a judge later ruled they could go ahead.

After throwing his name, money, and platform behind Trump, Mr Musk has plenty to gain from Trump’s re-election.

The president-elect has said that in a second term, he would invite Mr Musk into his administration to eliminate government waste.

Mr Musk has referred to the potential effort as the “Department of Government Efficiency,” or DOGE, the name of a meme and cryptocurrency that he has popularised.

The businessman could also benefit from Trump's presidency through his ownership of SpaceX, which already dominates the business of sending government satellites to space.

With a close ally in the White House, Mr Musk could seek to further capitalise on those government ties.

Mr Musk has criticised rivals including Boeing for the structure of their government contracts, which he says disincentive finishing projects on budget and on time.

SpaceX has also moved into building spy satellites just as the Pentagon and American spy agencies appear poised to invest billions of dollars into them.

Mr Musk’s electric vehicle maker Tesla could meanwhile reap gains from an administration that Trump has said would be defined by “the lowest regulatory burden.”

Just last month, the US agency in charge of regulating road safety revealed it was probing Tesla’s self-driving software systems.

Mr Musk has also come under fire for allegedly seeking to block Tesla workers from unionising. The United Auto Workers filed unfair labour practice charges against both Trump and Musk after the two talked about Musk supposedly firing striking workers during a conversation on X.