[mountn man]

In 2008 Obama ..1,844,123
In 2012 Obama ..1,773,827 (-70,296)
In 2016 Clinton 1,877,963 (+104,136)
In 2020 Biden ..2,248,032 (+370,069)

[buwaya]

Higher turnout is not such an unlikely outcome of vast spending and the very weird circumstances of 2020.

Some other skulduggery may have been worked as well, but that is not necessary to explain this.

[Alberta's Child]

Those numbers don’t seem out of line. I believe Atlanta has been one of this fastest growing metro areas of the U.S. since 2008. That would account for the whole difference right there.