In congressional races it is a foregone conclusion that dems win big city machine but the positive thing about the division of the congressional is it is much harder to cheat in a way that alters the National outcome.I'm betting the big blue city machines still have enough raw power to move most of the dem candidates over the goal line one way or another. The elections will be close until city money disappears and that won't happen until the federal largess dries up.
I wish the senate races were set up like the EC if we are going to popular vote for them.