Kamala Harris is not the affirmative-action candidate. Donald Trump is the affirmative-action candidate. His voting support is entirely based on the fact that he's a rich white man who's proud to be a rich white man.
That's why scandals have never hurt him, no matter how outrageous those scandals were, because none of those scandals affect his principal appeal: the fact that he's a rich white man who's proud to be a rich white man.
If his appeal were based on any of the things he claimed it was about, then his scandals would have affected him. He said he would wipe out the debt. He added $8 trillion to it in just 4 years. He said he would "drain the swamp" of corruption. He took money from foreign governments. He said he would defend democracy. He tried to undermine and defeat it. He said he would restore "family values". He's a serial adulterer, a rapist, an incestuous creep who ogled his own daughter, and probably even a pedophile.
He said he would be the most "transparent" president ever. He refused to release his financial records, he held closed-door meetings with Putin without a stenographer present, he made the White House visitor log secret, and he balked when a reporter asked if the Jeffrey Epstein files should be made public. He said rich people would "hate" his tax changes. They loved his tax changes. He said he would be the "law and order president". He's a convicted felon, many of his friends are in prison for money laundering and fraud, he appointed unqualified judges, and he demands immunity from the law.
None of these scandals and broken promises ever hurt him because none of these bogus claims were ever serious, and his base knew it. He's a rich white man who's proud to be a rich white man, and for a population which became accustomed to rich white men being apologetic about that fact, they saw that as a breath of fresh air. It's the only thing they really care to know about him. He's the affirmative-action candidate for rich white men, and they couldn't care less that he's a scumbag.