NEW: USPS data dug up by @jacobbogage shows that the battleground states that may decide the presidency have some of the nation’s most erratic mail service, with obviously troubling implications for vote-by-mail https://www.washingtonpost.com/business/2020/10/20/swing-states-election-usps/

Among other things, we were able to make this nifty animation showing how district-level on-time delivery has fluctuated this year. You'll notice everything tanks in July, shortly after DeJoy took over. https://www.washingtonpost.com/business/2020/10/20/swing-states-election-usps/

Here's the national average in chart form. DeJoy has said his changes would boost service in the long run, but months later service remains considerably slower than it was at the beginning of the year. https://www.washingtonpost.com/business/2020/10/20/swing-states-election-usps/

Here's a map showing the drop in on-time service since Jan. Note that battleground areas in PA, MI, WI, FL, OH and NC have seen some of the steepest declines. https://www.washingtonpost.com/business/2020/10/20/swing-states-election-usps/