The wide-open 2028 Democratic presidential field leaves the vice-presidential nomination market highly fragmented, with no contender above single digits in implied probability as traders price in uncertainty over the eventual nominee's selection criteria. Prominent governors and senators such as Gretchen Whitmer and Elissa Slotkin draw support for potential swing-state electoral math and governing records, while figures like Alexandria Ocasio-Cortez reflect ideological and fundraising constituencies within the party base. Jon Ossoff and Andy Beshear appear in pricing due to Sun Belt positioning and crossover appeal. Consolidation could occur after early primary results, convention dynamics, or explicit signals from leading presidential contenders regarding geographic or demographic balance. Upcoming state-level contests and midterm positioning will likely clarify pathways before formal nomination processes begin.