Definitely Cobb, GA, Not long ago it was always in the news for racism and homophobia.
I grew up in Gwinnett County and was shocked when Hillary won it in 2016. In 2004 (which wasn't that long ago), W Bush won it by 33 points against Kerry. I remember coming home from school that Thanksgiving, and every other car and House had Bush-Cheney stickers and yard signs. When I came home in 2016, I saw like 1 or 2 Trump-Pence stickers/yard signs. The county is now majority non-white, which is also shocking.