Tonight on The Last Word: NBC News projects that Republicans win a narrow House majority. Also, Cisco Aguilar defeats an election denier for Nevada Secretary of State. Plus, Democrats flip a conservative New Mexico House district. And a Connecticut state House race shows the importance of voting. Rep. Eric Swalwell, Stuart Stevens, Norm Ornstein, Nevada Secretary of State-elect Cisco Aguilar, Rep.-elect Gabe Vasquez, Sen. Chris Murphy and Connecticut State Rep.-elect Chris Poulos join Lawrence O'Donnell.