South Carolina election officials may cut ties with the company they used, Minnesota printer SeaChange, over the mix-up after about 20 Charleston County absentee ballots were found outside the state, the reports say.

Election officials say this isn't the first absentee ballot issue they've had with the company, which prints and mails ballots for 13 South Carolina counties.

Some voters in Greenville County received the wrong absentee ballots when the Democratic presidential primary and the special election for sheriff were held just 10 days apart, Election Commission spokesman Chris Whitmire told the Post and Courier. Voters in Charleston received ballots that were folded in a way that made them tough to read by scanning machines.