As of September 13, 2026, the prediction market “Will Marco Rubio win the 2028 Republican presidential nomination?” is tracked on Polyman with these live implied probabilities from Polymarket odds: Yes 18%, No 82%. Total traded volume is $10.6M. This market is open for trading. Polyman shows real-time odds, the positions of top Polymarket traders in this market, and lets you copy winning traders with one tap.