Politico's Inside Congress newsletter charts the leadership scramble after Democrats' midterm wave: Sean Casten is officially challenging Maxine Waters for the Financial Services gavel, while Ted Lieu, Pete Aguilar, Katherine Clark, Gregory Meeks, Robert Garcia, Joe Neguse and Richard Nel launched bids, and Republicans Steve Scalise and Jim Jordan face off for minority leader. It also reports Greg Steube's conference chair run, Ron Johnson's push to delay Senate GOP elections, AIPAC's bruising losses, and House pickups in North Carolina, Montana, and elsewhere.