The wide-open 2028 Democratic presidential field has produced a fragmented market for the vice-presidential nominee, with no single contender above 11% implied probability. Josh Shapiro, Gretchen Whitmer, and Andy Beshear lead due to their records as governors in competitive states, offering geographic balance and executive experience that traders view as assets for a general-election ticket. Alexandria Ocasio-Cortez trails closely by mobilizing progressive donors and activists, while figures such as Elissa Slotkin and Wes Moore gain from Senate or gubernatorial profiles and demographic appeal. Key consolidators include 2026 midterm outcomes, early endorsements from party leaders, and the eventual presidential nominee’s preference for ideological or regional balance.