Trump secured a dominant victory in the Iowa Republican caucuses, with over 50% of the vote. His comeback is stunning, given losing presidents rarely mount successful primary campaigns. Trump's victory shows his enduring dominance of the Republican base and grassroots support. It will be difficult for rivals to deny him the nomination. However, his legal challenges raise the possibility the GOP could nominate a convicted felon. Ron DeSantis and Nikki Haley placed second and third, respectively, but neither emerged as a clear alternative to challenge Trump.