But the thing is, Trump has been doing that his entire political life, ever since he started running in 2016. He did win the presidency back then, but lost the popular vote (and the dynamics of this election are very different than that one.)
I think somewhere along the line, the falsehoods probably quit having an impact on the undecided voter, and he's only making those claims for his own base.
I guess the question is, is Trump actually experiencing a rise in the polls?
If you look at the 538 polling average
fivethirtyeight.com:
Currently, Trump sits at 42.9%. This is exactly where he was back on June 1. Since that time he has varied between around 41% and 43%. And the spread between Biden and Trump sits at 7%, which is lower than it had been a few weeks ago, but higher than it was on June 1. (Yes, you do occasionally hear about polls that show a much narrower gap, but there are also plenty of polls showing the spread between them still at 8 or 9%.)
The amazing thing about this election so far has been the consistency in the polling... Both sides have their convention, polls remain static. Another cop shooting and rioting break out... polls remain static. An increase and subsequent decrease in Covid19 cases.... polls remain static. Republican attacks on Biden... polls remain static. Biden selects Harris as VP candidate... polls remain static.