No major-party figures have formally announced or filed serious 2028 presidential campaigns as of early October 2026, with only minor or fringe candidates registering with the FEC. Potential contenders including JD Vance, Kamala Harris, Gavin Newsom, Pete Buttigieg, Alexandria Ocasio-Cortez, Andy Beshear, and Ted Cruz have signaled interest through polling visibility, early-state travel, or public comments, yet most defer decisions until after the November 2026 midterms. Several Republicans and Democrats have explicitly ruled out bids or conditioned runs on others’ choices, narrowing the early field. Trader consensus in related markets reflects the historical pattern of announcements clustering in 2027, roughly 12–18 months before primaries, though late-2026 positioning or exploratory steps by high-profile names could shift probabilities ahead of year-end. Midterm results and subsequent statements from frontrunners represent the next key catalysts.