President Donald Trump has publicly stated that it remains “way too early” to discuss or issue endorsements for the 2028 Republican presidential nomination, even after private remarks to donors in which he expressed a preference for Vice President JD Vance. He continues to highlight a potential contest between Vance and Secretary of State Marco Rubio, signaling that no final decision has been made and that other figures remain under consideration. These comments, paired with the absence of any formal public endorsement more than 18 months before the 2028 primaries, have led traders to assign an 87.5 percent probability that Trump will withhold an explicit endorsement of Vance before 2027. Ongoing internal party dynamics and Trump’s historical pattern of delaying major succession decisions further support the current market consensus.