Former UN ambassador and GOP presidential candidate Nikki Haley said Wednesday that she will vote for former President Trump in November, a major shake-up to the 2024 race.

Why it matters: Haley's nod could give Trump a boost as he's repeatedly struggled to court her voters in recent GOP primaries, even after she suspended her presidential campaign.

Haley has continued to draw about 20% in GOP primary contests, creating a warning sign for Trump's campaign.

She also drew double-digit vote shares in key suburban counties in Pennsylvania, Wisconsin and Georgia, areas that could determine the election.

Driving the news: Haley said during a conversation at the Hudson Institute that Trump has not been "perfect" on a number of policies, but President Biden has been a "catastrophe."

"I will be voting for Trump. Having said that, I stand by what I said in my suspension speech," she said.

"Trump would be smart to reach out to the millions of people who voted for me and continue to support me."