Maybe 30 to 45 minutes in Merritt Island, Florida, back in 2004.
It was my first time voting, and I went with my parents after they were home from work, so it’s likely that that was the longest anyone there waited.
I’ve lived all over central Florida since, and have never had to wait at all, but that’s mostly because I do Early Voting or even Vote By Mail now.
Shoutout to The Chats for helping to finally identify(?) Mr. Democracy Manifest.