Looking at the poll averages on RealClearPolitics, Trump is at 259 if he wins every state where he is currently ahead or where Biden leads him but is within the margin of error. He needs either Michigan or Pennsylvania to get to 270.
The national polls would be meaningless even if they weren't fraudulent. Hillary beat Trump in the popular vote by 2.5% and lost in a landslide in the Electoral College. We added 7-8 million migrants who will be voting for Biden but they are mainly in blue states he would have won anyway. If you factor in the margin of error, Biden could easily poll up 5-7% and just equal Hillary's performance. And that would be a poll that isn't obviously fraudulent.