Pennsylvania Voter Registration Edge (D-R):
2008: Dem edge over Rep: 1,236,467(民主黨比共和黨多123萬)
Result: Obama wins by 620,478
2012: Dem edge: 1,135,173(113萬)
Result: Obama wins by 309,840
2016: Dem edge: 916,274(91萬)
Result: Trump wins by 44,292
2020 (10/5): Dem edge: 717,386(71萬)
Result: ??
2020民主黨註冊選民減共和黨註冊選民數比2016少掉將近20萬
今年的結果會是?