USPS warns states on 2020 ballot delivery (2020)
USPS sent letters to 46 states warning it could not guarantee on-time delivery of mail-in ballots for the November 2020 election, citing operational changes. Postal inspectors later reported worsening on-time delivery rates for first-class mail.
States adjusted ballot deadlines, voters were urged to mail ballots early, and multiple lawsuits sought to restore USPS operational standards before Election Day.
The incident cemented the USPS as a recurring risk factor in election administration and intensified national debate over vote-by-mail reliability.
Shows USPS operational issues can disrupt election mail — the same vulnerability San Francisco voters are now confronting with torn envelopes.
