Could Biden deny Trump a clean county sweep in all states?

[Roll Roons]

Probably not. I still think that Donald Trump will carry all counties in West Virginia, and possibly Kentucky as well.

Kentucky?

Trump didn't even win all KY counties in 2016. Jefferson County (Louisville) and Fayette County (Lexington) are definitely NOT voting for Trump.

Jefferson and Fayette were somewhat close in 2016, so Donald Trump definitely had a chance to win them in 2016 given his high popularity in Kentucky. Conversely, I think that Joe Biden will sweep all the counties in Massachusetts, Delaware, and Hawaii. There is also a small chance that Joe Biden could sweep all the counties in California as well if he is having a great election night.

There is no way he sweeps every county in California. Sure, he'll win big in the Bay Area, LA, San Diego, and probably Orange, but a lot of those inland counties are super conservative and Trumpy. Also I think Sussex in Delaware is probably too far gone even for him.