People are wildly motivated to vote against both ugly, ignorant Trumpism and illiberal leftist authoritarianism.
I agree with you, however, look at your own the reasoning behind the vote. “Ugly, ignorant Trumpism” vs “illiberal leftist authoritarianism.” Most who “hate” Trump has to do with Trump’s personality, not his policies. Most people not voting for Biden/Harris are doing so for policy reasons.
Given the fact that 1 of these candidates is going to win, it makes no sense to vote for a ticket whose policies will destroy the US as we know it just to spite the other ticket. I am not saying you are doing this, but that is what the vast majority that are voting for Biden/Harris are doing. They are completely blinded by hate.
That is not true. Trump's approvals are underwater on nearly every issue. The reason he will likely lose is because of his lack of policy on the coronavirus. His policies have utterly failed and it is now out of control.