José Antonio Kast leads a deeply polarized presidential runoff in Chile, with polls showing him favored to defeat Jeannette Jara as he campaigns on mass expulsions of Venezuelans, a desert wall with Bolivia and strict abortion bans.Kast’s movement, visibly boosted by supporters such as Laura Lagos and Rodolfo Carter, has pledged a "government of emergency" granting greater autonomy to police and the army to confront organized crime and irregular immigration.Critics including Óscar Cantardo and Valeria Zuñiga warn that Kast’s proposals risk a return to Pinochet-era abuses, and analysts note his Republican Party lacks a congressional majority so institutional checks and compromises will likely constrain his agenda.