Nikki Haley reveals she'll vote for TRUMP in November, but gives her Republican rival a warning as he prepares for rematch with Joe

 Nikki Haley threw her support to Donald Trump in a speech in DC Wednesday, saying she will be voting for her former rival.

'As a voter, I put my priorities on a president who's going to have the backs of our allies and hold our enemies to account. Who would secure the border, no more excuses,' she said at the Hudson Institute.

'Trump has not been perfect on these policies, I have made that clear many, many times. But Biden has been a catastrophe. So I will be voting for Trump,' she said. 

'Having said that I stand by what I said in my suspension speech,' Haley said. 'Trump would be smart to reach out to the millions of people who voted for me,' she warned.

Haley was the last Republican standing after a brutal primary campaign. It ended with her ramping up her attacks on Trump, who ridiculed her as 'bird brain' and repeatedly mocked her.

On Wednesday she once again called on Trump to respect her supporters, following multiple statements by Trump that he didn't need them. 

Her comments come as Trump has surrounded himself with loyalists, bringing many to his Manhattan hush money trial, with fewer signs of publicly courting his former rival.

Haley also had a warning for Trump when she ended her campaign after Super Tuesday in March after losing her home state.

'It is now up to Donald Trump to earn the votes of those in our party and beyond it who did not support him. And I hope he does that,' she said. 'At its best, politics is about bringing people into your cause, not turning them away. And our conservative cause badly needs more people.'