Fresh off a well-received presentation for Terminator: Dark Fate at CinemaCon, its badass-looking star Mackenzie Davis is in negotiations to join Steve Carell and Rose Byrne in Jon Stewart's political satire Irresistible, Collider has exclusively learned. Sources say the story follows a slick Democratic strategist (Carell) who helps a retired veteran (Chris Cooper) run for Mayor in a small, right-wing town in Wisconsin -- which is, of course, a swing state. Byrne will play Carell's cutthroat Republican counterpart who campaigns on behalf of the local mayor, while Davis is nearing a deal to play Cooper's …