As of midday Saturday, November 12, control of each chamber of Congress remains undecided.
U.S. Senate
Sen. Mark Kelly has won reelection in Arizona, bringing Democrats to the doorstep of retaining control of the Senate. Each party now sits at 49 seats, with Nevada and Georgia remaining. The Georgia race is going to a December 6 runoff. As Democrats maintain control at 50 seats - VP Kamala Harris can break ties - this means that Republicans cannot gain control prior to the runoff.
Pennsylvania is the only Senate seat that has flipped thus far. In Alaska, we know a Republican will win, but we won't know which one until November 23.