Boston and Manhattan have pretty much always been Democratic; initially because of Catholic and Jewish immigration, now because virtually all major cities do.
By the same token Atlanta: first because of White Southerners, then because of Black voters, and nowadays it's clear that people of every race in Atlanta are strongly Democratic.
Atlanta was incorporated in 1847 and as far as I was able to collect it seems to have had weird voting patterns in the first years, but has clearly voted consistently Democratic from 1876 to now (with the possible exception of 1972, I am not sure about that).
Actually, I believe that according to the map of white vote by county that is somewhere on this forum, Fulton County whites narrowly preferred Trump in 2016, but you are nonethless right about Atlanta as a whole always having been Democratic.
Right, but that margin comes from the former-Milton-county part of Fulton County.
Atlanta Whites are sure as hell pretty Democratic.
Well there is buckhead which is the rich part and swing, I think Clinton and Kemp both won it
.
