Milwaukee election officials started over counting absentee ballots after an observer saw panel doors on tabulators weren’t properly shut.

Milwaukee's central count location will rerun about 31,000 ballots after a "sealing" error with the tabulation machines was discovered.

Some 30,000 absentee ballots in Milwaukee need to be recounted, likely delaying the results in the key swing state of Wisconsin, election officials said.

Election workers in Milwaukee County will recount roughly 30,000 absentee ballots that had already been counted, CBS58 in Milwaukee report

NBC News' Shaquille Brewster reports from Milwaukee, Wisconsin, where thousands of absentee and early ballots are set to be recounted after some state officials noticed some vote tabulator machines were not properly locked.

The doors on the machines that were counting the absentee ballots in Milwaukee were ajar. Sabrina Franza reports from the Wisconsin Republican Watch Party in Pewaukee.

Milwaukee election officials are recounting roughly 30,000 absentee ballots after issues were discovered with tabulator seals. City spokesperson Jeff Fleming told reporters the redo will likely cause delays in reporting those results in the key swing state.