The 2028 Democratic presidential nomination market remains tightly contested, with top outcomes clustered below 19 percent implied probability, as traders price in a wide-open field lacking an established frontrunner two years before primaries. Alexandria Ocasio-Cortez and Jon Ossoff have edged ahead on momentum from polling gains in early states and Ossoff’s strong positioning in his Georgia Senate race, while Gavin Newsom’s prior lead has narrowed amid questions over statewide appeal and broader electability. Kamala Harris and other governors or senators trail further, reflecting uncertainty over post-2024 party direction and the impact of 2026 midterm results on candidate viability. Upcoming Senate contests and any formal declarations could shift probabilities by clarifying fundraising, endorsements, and voter coalitions across progressive and moderate factions.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedKamala Harris expands book tour signaling 2028 presidential campaign
Kamala Harris rises to 10%2%
In late 2025 and early 2026, Kamala Harris expanded her book tour promoting "107 Days," signaling preparation for a 2028 presidential campaign and influencing her market price rise from 8% to 10%.
Kamala Harris remains undecided on 2028 presidential run while campaigning for 2026 midterms
Kamala Harris dips to 8%1%
Kamala Harris publicly stated she has not decided whether to seek the 2028 Democratic presidential nomination and is focusing on the 2026 midterm elections, which contributed to a stabilization and slight decline in her market price.




















































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