Katherine LaNasa of “The Pitt” commands the 75% implied probability as the clear frontrunner, fueled by the HBO Max medical drama’s dominant 25 Emmy nominations this cycle and her prior win in the category. The show secured four of the seven supporting actress drama slots, underscoring deep ensemble strength and critical momentum from its sophomore season. Karolina Wydra (“Pluribus”) and Sepideh Moafi (“The Pitt”) sit at 10% and 7% respectively, reflecting limited competition outside the “Pitt” bubble, while Allison Janney (“The Diplomat”) and Julianne Nicholson (“Paradise”) trail further amid weaker precursor signals. Academy voters have historically rewarded established frontrunners with repeat success in this category, though the ceremony timing and final voting round could still allow for intra-“Pitt” consolidation or an upset.