for watching the late show with ephen colbert is nex captioning sponsored by cbs >> at last night's pennsylvania senate debate, g.o.p. candidate dr. oz revealed who he thinks should be involved in medical decisions. >> as a physician, i've been in the room when there are some difficult conversations happening. i don't want the federal government involved with that at all. i want women, doctors, local political leaders, letting the democracy that's always allowed our nation to thrive to put the best ideas forward. ♪ ♪ ♪ >> tonight on "local political leader hospital": >> we're losing him! >> wow, what a mess. that looks more tangled than that downtown intersection before we put in that four-way stop-- my idea. >> next week on "local political leader hospital." ( ding ) >> you guys mind if i join in? i have all the proper permits. >> announcer: it's "the late show with stephen colbert." tonight: b and switch. plus, stephen welcomes: aubrey plaza and nikole hannah-jones feins cato and the late show band. and now, live on tape from the ed sullivan theater in new york city, it's stephen colbert! ( ch