In the lead-up to the House of Councillors election scheduled for July 2025, three male staff members from Ota Ward have been suspected of inflating invalid votes, leading to their documentation by the Tokyo Metropolitan Police on charges of violating election laws. The incident arose from errors during the counting process, where some absentee votes were mistakenly double-counted, resulting in a significant discrepancy between the total number of voters and the actual vote count. To address this mismatch, these individuals allegedly included a fictitious total of 2,500 invalid votes in the electoral district and 2,700 in the proportional representation segment.

The public service law under which these individuals are charged stipulates penalties of up to five years in prison or fines of up to 500,000 yen for tampering with vote counts. The counting process in Ota Ward is intricate, divided among various teams responsible for sorting votes by candidates, handling invalid votes, and verifying the accuracy of vote sorting. The management of elections is strenuous, with workers often facing extended hours and insufficient manpower during the demanding electoral period, raising concerns about the pressures that may have contributed to this misconduct.

Election management staff, having over a decade of experience in Ota Ward, have expressed a mix of anger and sympathy towards the accused. This incident has sparked discussions within the election management community regarding the challenges faced in handling elections and the potential factors leading to ethical breaches. As investigations unfold, the broader implications for public trust in the election process and the integrity of electoral systems in Japan are being scrutinized thoroughly.