Here are the election results for the August 18 by-election in Alberta, Canada. Because 214 candidates qualified, the elections office decided to print blank ballots, so that all votes were write-in votes. Each polling place had a list of all the qualified candidates.
Only seventeen candidates got as many as ten votes.
The reason there were so many candidates is that a group deliberately recruited as many candidates as possible, to protest the failure of the Canadian government to switch to some form of proportional representation, after decades of agitation. Canadian House of Commons candidates need 100 signatures, plus a filing fee of $1,000.
Here is a picture of the write-in ballot.