Based on the search results from credible news sources, here is the fact-check analysis:

Fact Check Analysis

The claim is TRUE. Double mail-in ballots were indeed sent to some voters in Green Bay, Wisconsin.

Key Evidence:

• 152 voters received duplicate ballots: The city of Green Bay acknowledged that 152 voters were sent two absentee ballots for the April 7, 2026 spring election¹².
• Human error identified: Green Bay City Clerk Celestine Jeffreys stated the problem was caused by staff errors—someone mistakenly printed two sets of mailing labels, and another staff member accidentally mailed both sets to voters³.
• Discovery method: The error was discovered when voters who had already returned their absentee ballots received a second one and called the city clerk's office to report it¹.
• Official acknowledgment: At a news conference, Jeffreys confirmed the duplicate ballots and stated the city would prevent double-counting through daily audits of returned ballots followed by a ballot file audit².

Context:

• This incident prompted the Republican Party of Wisconsin to file a complaint with the Wisconsin Elections Commission, alleging the city did not adequately explain how the error happened or how it would prevent duplicate ballots from being counted¹².
• Similar incidents have occurred elsewhere in Wisconsin—Madison sent out more than 2,200 double ballots in the 2024 election³.
• Wisconsin Elections Commission officials have characterized these as "mistakes, not fraud"³.

Overall validity: 95%

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