Marco Rubio, serving as Secretary of State, ranks as a leading contender for the 2028 Republican presidential nomination alongside Vice President J.D. Vance. Recent national surveys, including Reuters/Ipsos and Rasmussen, show Rubio earning favorability ratings nearly identical to Vance’s among Republican primary voters, with both in the low-to-mid 40s on “excellent” candidate metrics. The party’s substantial midterm losses in the House and Senate have shifted some attention toward Rubio’s lower domestic profile and foreign policy focus, while prediction markets price him around 18 percent for the nomination. Rubio has repeatedly declined to address 2028 prospects and reaffirmed plans to complete his term. No major scheduled events before year-end are expected to alter positioning, though continued polling trends or administration developments could influence trader assessments of his implied probability.