Who will be the two major party nominees of the 2028 United States Presidential Election? (resolves 50% each)
💡 What the odds say
Most likely: Other at about a 23% chance.
The field is unusually fragmented for 26 months out, with no candidate above 16% and the top three combining for just 53%, reflecting a pre-primary phase where name recognition and institutional roles dominate over any clear ideological or coalition-building signal.
📊 Base rate: Since 1972, the eventual major-party nominees have been the sitting vice president or a former nominee in about 70% of cases, making the current 16% for Vance and 5% for Harris low relative to historical patterns for incumbency-adjacent candidates.
What's driving it
- • JD Vance's 16% likely reflects his position as sitting vice president, a traditional springboard, but no recent headline directly boosts him—the Britannica list of popular-vote losers (Jul 22) is irrelevant to his odds.
- • Marco Rubio's 14% as Secretary of State may stem from foreign-policy visibility, but no recent headline ties to his candidacy; the Josh Shapiro Britannica entry (Jul 19) is about a potential rival, not Rubio.
- • Gavin Newsom's 12% is sustained by California's donor base and national media profile, but the June 2nd primary results (CAWP, Jun 16) show no direct California presidential signal.
- • Alexandria Ocasio-Cortez's 7% and Jon Ossoff's 5% reflect progressive and swing-state appeal respectively, but the Arkansas primary analysis (LSE, Jul 9) highlights political stasis, not a surge for either.
Why the front-runners lead
- • JD Vance leads because he is the sitting vice president, giving him institutional fundraising, donor networks, and a claim to continuity—a path that historically yields the nomination about half the time for incumbents' veeps.
- • Marco Rubio benefits from his Secretary of State role, which provides foreign-policy gravitas and national name recognition, plus potential appeal to establishment and Latino voters.
- • Gavin Newsom has California's massive donor base and a proven ability to dominate progressive media cycles, giving him financial and attention advantages over lesser-known Democrats.
Why it's still open
- • The field is wide open because no candidate has broken 20%, and 77% of the probability is spread across 'Other' or candidates below 5%, meaning a dark horse—like a governor or senator not yet in the market—could surge after a strong primary debate or early-state win.
- • Kamala Harris at 5% shows that even a former vice president and 2024 nominee can be marginalized, indicating that incumbency-adjacent status is not locked in and that a fresh face like Josh Shapiro (Britannica, Jul 19) could overtake her.
- • Donald Trump at 2% is a wildcard: despite being a former two-term president, his low odds reflect legal and age headwinds, but a major political event could revive his base and reshuffle the Republican side.
What to watch
- • The 2026 midterm elections (Nov 3, 2026) will reshape the field: if Democrats retake the House or Senate, candidates like Newsom or Ossoff gain momentum; if Republicans hold, Vance and Rubio solidify.
- • The first 2028 primary debates (likely mid-2027) will be a key catalyst: strong performances by low-polling candidates like AOC or Ossoff could double their odds, while a gaffe by Vance or Newsom could halve theirs.
- • Any formal announcement of a candidacy by a major figure not yet in the market—such as Josh Shapiro or Tim Walz (Britannica, Jun 24)—would immediately split the 'Other' pool and shift odds toward the new entrant.
AI-generated · grounded in recent news + odds · informational only, not advice. Verify on the source platform.
Data from Manifold’s public API, for informational purposes only. PredictPal is not affiliated with any platform and does not facilitate trading.
Discussion
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How it resolves
Resolved by whoever created the market, at their discretion per the question's description. It's play-money (Mana) and not tied to an official source — treat it as a community forecast.
Resolution criteria
Resolves 50% each to the two people who are the nominees of the Democratic and Republican parties in 2028, at the end of whichever national convention happens second. Any change in the nominees after the conclusion of the second convention will not effect the resolution of this market. Additional likely candidates will be added by the house as necessary and will split off from "other". Please leave a comment if you have any suggestions. See also: @/ManifoldPolitics/who-will-win-the-2028-united-states-a84qq6ejnj @/DylanSlagh/who-will-be-the-democratic-nominee-e7fd97afa9bf @/DylanSlagh/who-will-be-the-republican-nominee-757313dd0344
ⓘ A market settles under its own written rules, which can lag what looks decided in the news — so the price may not move to 100% the moment an outcome seems obvious.
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