French municipal elections in Paris and Marseille faced voting irregularities after ballot papers for sector lists were swapped with central mayoral documents.The La France insoumise party demanded that these votes be validated following reports of errors in several polling stations that affected candidates like Sophia Chikirou and Sébastien Delogu.Simultaneously, voters nationwide criticized the mandatory A4 ballot size for being too large to fit easily into standardized envelopes during the first round of voting.