This lines up with Biden leading by double digits in national polls.
This is what I was about to say. If Trump "only" wins West Virginia by 18 next month, then Biden will definitely carry at least Monongalia County. That means Biden could become the first presidential candidate in 24 years, since Bill Clinton in 1996, and the first one this century to win at least one county in every state.
Biden would also have to win a county in Oklahoma too. though I guess if he's doing this well nationwide he would win Oklahoma County, too