So how can we make sense of all of this? We can’t. Voters increasingly see the Democrats as extreme and out of the mainstream–no surprise there, since they are. Many Democrats want the U.S. to follow in Venezuela’s footsteps, but don’t want to admit it. Meanwhile most voters, while sensing this, also want the Democrats to control Congress.Perhaps voters prefer divided government so the gridlock that perpetually typifies Washington becomes easily understood, easily explained.
My guess is that the polls are missing major currents that will become clear, as in 2016, only after the votes are counted. What those currents will turn out to be, no one really knows.
Another couple of years of Speaker Pelosi is revolting to contemplate. She was plenty bad when she was able to say what she meant. Now she's exhibit A (for Alzheimer's) of the mumbling gerontocracy.