Most interesting counties in your state politically?

[VPH]

For Pennsylvania:
1. Bucks County because so many trends are happening there simultaneously. Upper Bucks is traditionally conservative and more exurban/rural but slowly trending towards Democrats, Middle Bucks is suburban and moving Democratic pretty quickly, and Lower Bucks is blue-collar traditional Democratic and shifting rightward.
2. Berks County is larger than a lot of people realize but has pretty low turnout. There's a significant Latino population in Reading proper and a good number of WWC voters elsewhere so the trends are neat to follow. Occasionally, it'll flip blue for the right candidate. If you're a Democrat winning Berks, you're doing quite well statewide.
3. Luzerne County because it's swung to the GOP so remarkably fast since the mid-2010s, with just about the whole county government flipping recently. Nonetheless, there are some Democrats who can win here, like Josh Shapiro.

For my home state of Kansas:
1. Ellis County because of its long Democratic history stemming from deep German Catholic roots. On a Presidential level, Ellis hasn't been Democratic since 1992, but it elected a Democratic State Rep. in Eber Phelps until just a few years ago. Laura Kelly kept the margins down here too.
2. Crawford County, another ancestrally Democratic county (this one because of mining plus labor heritage and ethnic mix stemming from that) but even more intriguing because it was once of the most Socialist counties in the country, won by Eugene Debs in 1912. Like Ellis, Democrats were shockingly able to hold onto a small town seat here in Frontenac with Adam Lusker representing the more rural seat until recently and another Democrat in Pittsburg too.
3. Harvey County, not because of the whole county but specifically because of the rural and smaller city (North Newton) Mennonite areas where Democrats pull well above their weight. Central Kansas Mennonites have had a unique political history, from supporting pro-German candidates in the 1930s to being a hub for anti-Vietnam War protests in the 1960s and 1970s.
4. Lyon County, home to Emporia which is a diversifying small city with a university. Usually not in play in Presidential races but now bluer than Sedgwick County at that level. Lyon is pretty moderate--former Lt. Governor Jim Barnett (who ran a centrist bid for Governor in 2018) hails from there, and its State Rep. is the center-right Mark Schreiber. It flips to Democrats against right-wing figures like Brownback or Kris Kobach.
5. Johnson County is interesting for the exact opposite reasons that Luzerne County PA is. It has skyrocketed towards Democrats. Just a decade ago, the best Democratic candidates failed to win it. Now, even the worst statewide Democratic candidates either win it or come close.