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.

According to a Journal Sentinel analysis of the latest Wisconsin Elections Commission data posted Thursday morning, Milwaukee County, the most populous county in Wisconsin, has received the highest number of absentee ballots. It is closely followed by Dane County and Waukesha County, the second and third most populous counties in Wisconsin.