Republican Party nominates Donald Trump for president

The Republican Party formally nominated Donald Trump for president of the United States Tuesday, capping a roller-coaster campaign that saw the billionaire tycoon defeat 16 White House rivals.

"It's my honor to be able to throw Donald Trump over the top in the delegation count tonight," the candidate's son Donald Trump Jr told delegates at the Republican National Convention which erupted in cheers and applause.

Trump is expected to formally accept the nomination in a speech on Thursday, before facing off against Democrat Hillary Clinton in the November election battle.