The fragmented probabilities for the 2028 Democratic vice-presidential nominee reflect a wide-open contest more than two years before the presidential primaries, with no dominant frontrunner and traders assigning single-digit shares across more than three dozen names. Contenders differentiate through Senate or gubernatorial records, regional appeal in battleground states, alignment with progressive or moderate factions, and demonstrated fundraising or media reach. Support could consolidate around individuals who perform strongly in 2026 midterm races, secure early endorsements from party leaders, or emerge as running-mate options once a presidential nominee clarifies their ticket-balancing needs on issues such as electoral math and demographic outreach. Late developments like polling shifts or convention dynamics remain key variables that could alter the current dispersion.