Republican Nominee Archives - Prediction Market Guides, Platforms & Insights

Editorial data comparison for the 2028 Republican presidential nomination showing J.D. Vance and Marco Rubio market and polling signals

Republican Presidential Nominee 2028

September 5, 2026 PredictBoy

J.D. Vance leads Polymarket’s 2028 Republican nomination market, but Marco Rubio is much closer in early New Hampshire polling. PredictBoy compares rules, market odds, polling, weighted factors and key risks.