Katherine LaNasa leads trader sentiment as the defending Outstanding Supporting Actress in a Drama Series winner for her commanding turn as charge nurse Dana Evans in HBO Max’s “The Pitt,” which earned a dominant 25 nominations including four in this category. The medical drama’s critical acclaim and Season 2 momentum have positioned her as the clear frontrunner, though the show’s multiple nominees raise vote-splitting concerns ahead of final-round voting. Sepideh Moafi benefits from strong ensemble reviews and her character’s expanded role, while Karolina Wydra draws support for her nuanced work in Apple TV+’s “Pluribus.” Allison Janney and Julianne Nicholson offer veteran appeal from “The Diplomat” and “Paradise,” but trail amid “The Pitt”’s narrative dominance. The September 14 ceremony remains the key catalyst.