"zero support for Trump among Black voters, while 82.1 percent of those voters backed Vice President Kamala Harris and 11.5 percent backed independent candidate Robert F. Kennedy Jr."

82.1 + 11.5 = 93.6 So there's some wiggle room in the remaining 6.4%.

I firmly believe that nobody is actually undecided between the Democratic and Republican candidates, they're simply too different.

If anyone is legitimately undecided it's between voting and not voting, but they absolutely know who they would be voting for.

"Undecided" in polling is:

1. "I aint a-telllin' yew who a'hma votin' fer!"
2. Trump voter who won't admit it.