Sure but what happened in the civil rights era was that anyone who was black was assumed to be voting against the racist as fuck candidate… so if you showed up and were black you’d be run off, beaten, or lynched.

Let’s say you’re me - I’m a man with a beard who wears skirts - I show up to vote and take a wild guess who I’m voting for… it’s not the chucklefuck that wants to persecute all my trans friends. Based on appearance alone (including swag you might have pinned to your bag) you could try and make a guess about how someone may vote.