New @MonmouthPoll has race in PA tightening significantly — within margin of error.

Among registered voters:
Biden 49 %
Trump 45
(+/- 4.9)

Aug 28-31, 400 PA voters

Mid-July Biden had 53, Trump 40. Since then Trump has gained with men and younger voters.

— Jake Tapper (@jaketapper) September 2, 2020