( KTRS ) Election officials say an overworked staff, a tight timetable and technical glitches are to blame for the ballot shortage in several St. Louis County precincts.

Directors of the St. Louis County Election Board Eric Fey and Gary Fuhr told lawmakers Wednesday two municipalities submitted their ballot information late, which led to problems when election officials changed the information in their databases.

The election directors said three teams of staff ordinarily check that enough of the county’s 323 ballot styles are printed.

But Fuhr said much of their staff was also working on March’s primary election and only one team checked the final totals.