Ramaswamy dropping out after Iowa seems to have been a boon to Trump. He has a 15 point lead going into the final stretch. People probably won't say it, but Haley needs to win this primary. There's really no path forward for her if she doesn't and that path is already a massive long shot even if she does.
Trump could go on Fox News to announce he personally sank a raft full of babies while giving head to Putin and texting nuclear codes to North Korea and he’d still be the nominee. It’s never been close or in doubt, and even if he’s running from prison 80%+ of registered republicans are locked in to vote for him in the election.