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Will Marco Rubio win the 2028 Republican presidential nomination?

Closes November 7, 2028

Cross-venue entity

Polymarket Price

22%YES
78%NO

Volume 24h

$62K

Liquidity

$310K

Bid / Ask

22% / 22%

Spread

0.20pp

Expert Signal

22%

Bayesian YES estimate

vs market+0.0pp
confidence21%
methodensemble

✦ AI Analysis

Synthesizes price, cross-venue gaps, Bayesian edge, and event context into a concise brief.

Event Distribution

Will MrBeast win the 2028 Democratic presidential…

2028

Full event →
the 2028 Republican presidential nomination?
37%
the 2028 Democratic presidential nomination?
24%
the 2028 Republican presidential nomination?
22%
the 2028 Republican presidential nomination?
5%
the 2028 Republican presidential nomination?
3%
the 2028 Republican presidential nomination?
2%
the 2028 Republican presidential nomination?
2%
the 2028 Democratic presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Democratic presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%
the 2028 Republican presidential nomination?
1%

54 related outcomes · highlighted = this market

Price History

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Price History

+7.7pp

Key Moments

First recorded

14% YES

Feb 24, 2026

Biggest move: +8.1pp

18% → 26%

Mar 10, 2026

Peak probability

29% YES — highest in period

Mar 12, 2026

Current

22% YES (+0.0pp recent)

Mar 26, 2026

Order Book (YES)

Expected Value Calculator

%
1%Market: YES 22%99%
Buy YES@ 22¢
Edge

+1.1%

EV per $ wagered

Full Kelly0.3%
½ Kelly0.2%
Buy NO@ 78¢

-0.3%

EV per $ wagered

Buy YES+1.1% EV per dollar wagered·Kelly 0.3%

EV = return on investment if your probability is correct. Kelly = optimal bankroll fraction (½ Kelly is a common conservative choice). Fees not included.

Backtest Strategy

50%

Enter when YES price ≤ this

Research Summary

Prediction markets currently price "Will Marco Rubio win the 2028 Republican presidential nomination?" at 22% YES / 78% NO. In the last 24 hours, $62K has been traded. A Bayesian estimate puts the probability at 22%. The bid-ask spread is 0.20 percentage points. The market closes on November 7, 2028.

Cite this snapshot

ForecastMind (2026-03-26). "Will Marco Rubio win the 2028 Republican presidential nomination?." Prediction market snapshot: YES 22%, NO 78%. Retrieved from https://forecastmind.org/markets/561975