Am I a fool for thinking that Trump could actually improve here from 2016? Yes, Blackburn only won by 18 here but that was after the TN Dems nominated their best possible candidate whose top targets included Williamson County. Even after desperately targeting the county, Bredesen couldn't make it (or the state, for that matter) competitive.
Contrast that to the 2020 Democratic nominee, who probably won't ever visit TN and certainly not Williamson County.
I mean, if the Democrats nominate Sanders or Warren, it's certainly possible. It's very similiar to the WOW counties in WI.