Andrew Garfield leads Polymarket’s Best Supporting Actor odds at 34% on the strength of early critical raves for his performance in Luca Guadagnino’s *Artificial*, which premiered at the New York Film Festival and positioned him as the category’s clearest frontrunner. Paul Giamatti sits at 25% behind strong industry goodwill and an overdue narrative for *The Debut*, while festival launches for Sam Rockwell in *Wild Horse Nine* and John Leguizamo in *The Odyssey* keep several names within striking distance. With nominations still months away and no guild or precursor results yet, trader consensus reflects festival momentum and historical voting patterns rather than locked-in outcomes, leaving room for late surges once wider audiences and awards bodies weigh in.