[galago]

I observed this in New England while living in a city with evenly distributed population. The polling locations were more abundant in the wealthier side of the city. This may not have been straight racism; there was no way for me to determine why this was the case. Looking at a map of median income and polling locations made it pretty obvious to me at least that polling location choice was biased.

[the_snooze]

It could be as simple as "wealthy areas get more county services." There are practical considerations when choosing polling places, like the availability of parking and enough space to accommodate a line, check-in tables, voting booths, and ideally separate entrance and exit doors. Public schools and county rec centers are go-to locations because the county (who administers the election) already owns them and they have the space needed. Churches are great too, but they require having an agreement with a private organization.

[seanmcdirmid]

By New England I guess you just mean Boston and the Boston area right? I'm unaware of any other huge concentrations of African Americans in that region. Boston is well known for its racism, I actually had a friend from Boston when I was living in Vicksburg MS and they got along there much better than me.