WASHINGTON, D.C. (CBSNEWS.COM) –  New statistics show the U.S. Postal Service is doing a worse job of delivering the mail on time, raising concerns that some election ballots may be delayed.

Mailboxes sit outside a post office on August 17, 2020. (credit: Theo Wargo/Getty Images)

The Postal Service said Friday that its on-time delivery rate for first-class mail slipped to 85.6% for the week ended October 16. That’s down from nearly 91% over a three-month period ending in June.

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