What if Donald Trump Said This About Your Daughter?

Amazingly this had almost no impact by those who voted for him. Hypothetically, could he have gone as far as using he word "ni**er" in a recorded private conversation? like "look at those Ni**gers over there, they make me sick".... Would that have been too much, and sunk his campaign, or would it have little impact, like what is heard in the video?

I ask this question because there is a perception that Trump base primarily consists of people who have some strong racial biases. Maybe they are not racists against blacks, but they might have strong racist feelings against Muslims or immigrants.