The only thing I’ve noticed is that Trump is winning over people who did not vote for him. And, the #walkaway movement is a direct result of the Left’s extremism and hysteria. So, Trump is taking more Democrats and Independents than he is losing his base; if he is losing any of his base...which I doubt.
IF you believe polling, Trump is doing much better with Republican voters now then he did on election day 2016.
That matches the evidence I have seen.