Ron DeSantis exits 2024 presidential race, citing unclear path to victory and endorses Donald Trump.
Nikki Haley, Trump's sole challenger, asserts herself as the only candidate capable of defeating Joe Biden.
Trump's dominance in polls solidifies as DeSantis withdraws, setting the stage for a Trump vs. Haley showdown.
New Hampshire primary becomes critical battleground for Republican nomination, highlighting shifting dynamics.
DeSantis' departure underscores internal GOP struggles, emphasizing Trump's enduring influence within the party.