Election officials said Wednesday that the mistake does not affect any real ballots, including absentee ballots.

Republican Director of Elections Rick Stream says St. Louis County sends out election cards with the sample ballot printed on the back, a way of giving voters a preview of what they’ll be voting on. The mailings went out Monday.

But voters in three zip codes received sample ballots meant for neighboring areas, which means a few races were listed incorrectly. Stream says the vendor will send out the corrected versions at no cost to taxpayers.