Amy Walter: “The question for Tuesday night isn’t whether it will be a good night for Democrats (it will be), but whether it will be a historic one.”“We expect Democrats to handily win control of the House, with the most likely outcome being that they flip between 15-25 seats. The lower end of that range would result in a thirteen seat Democratic majority, but the higher end would see Democrats with their largest majority since 2009.”“And Democrats could win back control of the Senate if they flip at least two seats that President Donald Trump carried by double digits. The fact that our Toss Up column features five Republican-held Senate seats that Trump carried by more than 10 points is extraordinary. No election in at least the last 16 years has seen the party in the White House lose more than one Senate seat that the president had carried by such a large margin.”