But Ohio is one of the states where I read about people waiting up to five hours to vote in the last election.

So how does that work?

I've been a scrutineer in Canadian elections, I know how much time it takes to process an elector - even a chatty one who wants to discuss the weather with every single one of the elections officials and scrutineers and other voters in the polling station, or a confused one who's never done this sort of thing before - and get them from the door of the polling station to the voting booth, and from the voting booth back out the door again. Even if it takes 10 times as long inside the voting booth because there are more boxes to tick off, or slots to pull, or names to touch on a screen, or whatever mechanism is being used in Ohio, how can a maximum of 175 people ever need to wait in line for five hours?

Seriously, I don't understand where the bottleneck is.