Based on my search, I found clear evidence confirming this claim. Multiple local and national news outlets have reported on this incident.

Verification:

• 152 Green Bay voters were mistakenly sent two absentee ballots due to a clerical error where mailing labels were accidentally printed twice¹²³
• City Clerk Celestine Jeffreys acknowledged the mistake, explaining it occurred because her office was rushing to send out ballots after City Hall was closed an extra day due to Blizzard Elsa¹³²
• The clerk's office stated they are ensuring votes will not get counted twice³¹²
• The news reports explicitly state that "the incident has some voters asking questions about election fraud" and that "This incident has prompted concern about potential election fraud within the city of Green Bay"¹³²
• The reports are from WLUK FOX 11 News, a local Green Bay/Fox Cities television station²³¹

The reporting accurately reflects that this was an administrative error (not actual fraud), but it did raise concerns among some voters about the potential for election fraud.

Overall validity: 100%

1. 152 Green Bay voters mistakenly mailed 2 absentee ballots
2. 152 Green Bay voters mistakenly mailed 2 absentee ballots
3. 152 Green Bay voters mistakenly mailed 2 absentee ballots - KATV