Will Marco Rubio run for president in 2028?

The clearest signal about Rubio's 2028 prospects came not from Rubio himself but from President Trump. On May 12, 2026, Time magazine reported that Trump discussed 2028 succession at the White House, naming Marco Rubio and JD Vance as his two most likely successors. That framing -- naming the sitting Vice President and the sitting Secretary of State as the two successors he envisions -- is the most explicit public presidential endorsement of any 2028 candidate in either party. It also defines the central question about Rubio's 2028 path: is he positioning for a run as an independent candidate, or does he expect his best path to the Republican nomination to flow through Trump's public support and eventually through Vance's blessing if Vance wins? He took no organizational steps toward a campaign, and on September 9, 2026 he told Colombian broadcaster RCN he has "no plans at this time" to run in 2028.

In GOP primary polling taken in mid-2026, Rubio consistently places second, behind JD Vance in every survey and often well ahead of everyone else in the field. The figures across recent polls, all verbatim from the cited surveys: 26 percent in the Quantus Insights poll of July 3-7, 2026 (480 likely voters); 18 percent in the Focaldata poll of June 26-30, 2026 (727 likely voters); 18 percent in the Big Data Poll of June 26-28, 2026 (1,166 likely voters); 15 percent in the McLaughlin and Associates poll of June 17-23, 2026 (440 registered voters); 15 percent in the Echelon Insights poll of June 11-14, 2026 (418 likely voters); 21 percent in the Harvard-Harris poll of May 29-31, 2026 (1,725 registered voters); 34.6 percent in the Emerson College poll of May 24-25, 2026 (432 likely voters) -- the survey where Vance led 35.5 to 34.6, a near-tie by any polling standard; and 32 percent in the Overton Insights poll of May 16-20, 2026 (509 respondents). In the Emerson and Overton surveys, where Vance's lead narrowed sharply, Rubio appeared to consolidate support from Republican primary voters offered a limited field. In surveys with larger fields (Focaldata, McLaughlin, Echelon), his share fell to 15-18 percent as other named candidates drew voters. That spread -- from 12 to 34 percent across different poll methodologies -- reflects the volatility of a race where most voters have not yet focused on 2028 and where no candidate except Vance has locked down a stable coalition.

A structural complication unique to Rubio is his current role. He is the 71st U.S. Secretary of State, the nation's top diplomat, serving under President Trump in an administration that runs through January 20, 2029 -- the same day the next president is inaugurated. The 2028 Republican primary season will be well underway by late 2027, and the general election campaign will be running through the fall of 2028. Cabinet secretaries have resigned to seek presidential nominations before -- but the timing for Rubio would be especially delicate, requiring him to step down from a major diplomatic post while Trump is still president. If Rubio resigns from State during the campaign, it creates an awkward dynamic with the incumbent administration that elevated him; if he stays through the end of the Trump term, he has no time to mount a primary campaign before Election Day. Most observers assume any serious Rubio campaign would require a resignation from State in late 2027 at the latest. That decision -- and its timing -- is the most concrete near-term variable in whether he actually runs.

Rubio is a Florida resident, which creates a specific 12th Amendment consideration in the context of a presidential ticket. Florida has 30 electoral votes and is classified as Likely Republican for 2028 -- not a battleground. Ron DeSantis, the term-limited former Florida governor, is also a Florida resident and a 2028 Republican contender. If both Rubio and DeSantis were on the same Republican ticket, Florida's 30 electoral votes would be at risk under the 12th Amendment, which requires presidential electors to cast at least one of their two votes for a person who is not from their own state. Dick Cheney changed his voter registration from Texas to Wyoming in 2000 to avoid this constraint when joining George W. Bush's ticket; the same move would be required for a Rubio-DeSantis or DeSantis-Rubio pairing. For Rubio's own presidential run, the Florida same-state issue matters most in VP selection: because Florida is already Likely R and not a battleground, a Rubio ticket's VP pick would need to supply credibility in genuine swing states -- Pennsylvania (19 electoral votes), Georgia (16 EV), North Carolina (16 EV), Michigan (15 EV), Arizona (11 EV), or Wisconsin (10 EV) -- rather than relying on Florida's safe Republican margin. Rubio is constitutionally eligible: he was born in Miami, Florida, making him a natural-born U.S. citizen. He is 55 years old as of mid-2026 and would be approximately 57 on Election Day, November 7, 2028 -- well above the constitutional minimum age of 35 -- and meets the 14-year U.S. residency requirement. The 22nd Amendment does not apply to him; he has never been president.