Steve Kornacki: Changing Demographics In Atlanta Area Helped Warnock's Campaign

Democratic Sen. Raphael Warnock defeated Republican football star Herschel Walker on Tuesday in Georgia’s Senate runoff election, NBC News projects, handing President Joe Biden and his party a key win. Warnock’s victory will give Democrats an outright majority in the Senate after two years under a 50-50 divide, with Vice President Kamala Harris casting tie-breaking votes. Steve Kornacki discusses Warnock's win.