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- Trump is the likely GOP nominee, and most Republican senators have endorsed him.
- But there's still a rather conspicuous group of holdouts.
- Some voted to convict Trump and may never back him, while others will do so once he's the nominee.
After victories in several early primary states, former President Donald Trump's ascent to the Republican nomination in 2024 is all but certain — even as Nikki Haley vows to continue her campaign.