Has any President won with Approval Rating under 50 Percent? Trump has never hit 50. He is at 36 today can he get to 50 by 2020?

Trump will be the only President in History back to the 1st polls that has not hit the 50 percent mark. Today 36 percent with a whopping 62 percent disapproval. Can he win with those low polls or does he have to improve on them? I doubt that the polls are wrong this time.
13 answers 13