Mr. Schulze noted- I believe that it happens very frequently that a poll station uses wrong ballots (i.e.: ballots that have been printed for a different constituency). -- D- My state government has a detailed election manual/checklist for poll workers to follow on election day. Included in such manual is a requirement that the poll workers on election day are to check to see if the paper/ punchcard/ electronic ballots are correct for their precinct. The wrong ballot problem can easily occur in the U.S. due to the various overlapping congresional, state, county, city, etc. legislative body gerrymander districts (producing multiple ballot "forms" - the subareas with the same ballots- especially in urban areas -- yet another reason to have larger/fewer multi-member PR districts.
