**As of August 31, 2026, no major-party figures have formally declared 2028 presidential candidacies, aligning with historical patterns where serious announcements typically follow the November midterms and accelerate through early 2027.** Minor or fringe candidates have filed or explored runs in 2026, including television writer Dan Greaney in May and former NBA player Royce White in August, while exploratory steps by others such as former Border Patrol commander Gregory Bovino remain limited in scope. Trader focus centers on high-profile potentials like JD Vance and Marco Rubio among Republicans and Jon Ossoff, Alexandria Ocasio-Cortez, Gavin Newsom, and Kamala Harris among Democrats, whose early polling and prediction-market positioning reflect name recognition and positioning rather than confirmed intent. The upcoming 2026 midterms stand as the primary near-term catalyst that could reshape fields, donor interest, and timelines, with party rules committees and primary calendar decisions expected in early 2027. Uncertainty remains high given the open nature of both nominations and the constitutional bar on a Trump third term.