The 2028 Democratic vice presidential nomination remains wide open because no clear presidential frontrunner has emerged nearly two and a half years before the convention. Traders have therefore dispersed probability across a broad field of governors, senators, House members, and high-profile outsiders, producing a tight cluster of leading outcomes between roughly 15% and 22%. Limited recent developments—primarily routine party positioning and early donor conversations—have failed to consolidate support behind any single profile. Future catalysts such as primary results, major endorsements, or shifts in the presidential race could rapidly concentrate the field and widen gaps among current contenders.