Most interesting counties in your state politically?

[100% pro-life no matter what]

Williamson County.  Because I live there (just kidding).  No, actually, because it's such an outlier in so many statistical categories.  It's over 60% college educated and still votes Republican by 2:1 margins in most elections.  It's the wealthiest county in the whole South (and, adjusted for cost of living, the whole United States), but that is due to tons "5%" and "1%" people but not a lot of "0.1%" people.

It often shows up on maps.  A map someone posted a few years back showed Williamson County with the highest rate of church attendance outside of Utah.  It often disagrees with the statewide vote in GOP primaries (typically for the "movement conservative" instead of either an establishment or MAGA type).  In some referendums, it still stands out to this day as uniquely right-wing (such as the 2022 right to work referendum).

The Southern Nashville suburbs also have become a bit of an evangelical center- for both families and young adults.  There's a lot of self-selection in who moves to Nashville versus Franklin or Spring Hill.