In the poll, 50 percent of likely voters prefer Democrat to control Congress after the November elections, versus 41 percent who want Republicans to stay in charge — up 1 point from Democrats’ lead in the September NBC/WSJ survey…

Seventy-two percent of Democrats say they have high interest in the upcoming election, versus 68 percent of Republican respondents.

And among all registered voters, 65 percent have high interest — the largest for a midterm electorate dating back to 2006 in the NBC/WSJ poll.

“Midterms are about mobilization, and we are headed into the stretch run with unprecedented enthusiasm among both parties,” says Yang, the Democratic pollster.