As of October 28, 2026, the prediction market “Will J.D. Vance win the 2028 Republican presidential nomination?” is tracked on Polyman with these live implied probabilities from Polymarket odds: Yes 39%, No 62%. Total traded volume is $16.3M. This market is open for trading. Polyman shows real-time odds, the positions of Polymarket traders in this market, and lets you copy traders with one tap.