Toss Up/Battleground States
These are the states that will decide it. All the other states are firmly Trump or Biden
12 states
Biden is winning 9 of those states right now, Trump 3
Biden needs 48 votes from this list:
Pennsylvania (20) - Biden +3.9
New Hampshire (4) - Biden +5.5
Florida (29) - Biden +1.6
Wisconsin (10) - Biden +6.6
Nevada (6) - Biden +6
Michigan (16) - Biden +6.1
Arizona (11) - Biden +5
Ohio (18) - Biden +2.4
North Carolina (15) - Biden +0.6
Iowa (6) - Trump +1.4
Texas (38) - Trump +2.3
Georgia (16) - Trump +1
https://www.realclearpolitics.com/epolls/2020/president/2020_elections_electoral_college_map.html
Looks like Florida is this most important. Florida and Pennsylvania will get him 49. He could win those 2 states, lose the other 10 and become President.