In my research, I looked it up. They had almost as many candidates for Speaker, I think in 1988, as we have for leader of the Conservative Party right now with a version of the same problem. We actually have a problem where we can only get 10 names on the voting machines, but not on the ballot, because they just assume you'd never get more than 10 candidates, and we have 14.
I think they had 11 candidates and it took about an hour or an hour and a half to go through.