Gretchen Whitmer leads this Polymarket at 26% implied probability, ahead of Gavin Newsom at 14% and Tucker Carlson at 13%, as traders assess which prominent figures will formally enter the 2028 contest by year-end 2026. With no major-party announcements to date, positioning centers on Democrats such as Whitmer, Newsom, and Pete Buttigieg, who have signaled interest through interviews and exploratory steps, alongside Republican voices like Carlson testing viability outside traditional channels. The DNC’s August 2026 approval of an early 2028 primary calendar featuring South Carolina first has focused attention on candidates building support in key states, while the November 2026 midterms represent a near-term catalyst that could accelerate or delay declarations. Market prices reflect the wisdom of crowds factoring in historical patterns of pre-midterm caution and post-election positioning rather than confirmed intentions.