11:I[8479,["349","static/chunks/349-c9bb88602114b6df.js","173","static/chunks/173-8ffc04d433c3339f.js","865","static/chunks/865-f26eeb7d8a4ff1d6.js","444","static/chunks/app/episode/%5Buuid%5D/page-e9df19c6dc9fc3dd.js"],"EpisodeClient"] 12:T448,Up to 70% of vote this November could be cast by mail. But not all states will allow it.

And a recent NPR survey found that 65,000 absentee or mail-in ballots have been rejected this year for being late.

NPR's Mary Louise Kelly visited a county in Pennsylvania to see what challenges lay ahead for election night in a critical swing state.

Find and support your local public radio station.

Email us at considerthis@npr.org.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy13:T448,Up to 70% of vote this November could be cast by mail. But not all states will allow it.

And a recent NPR survey found that 65,000 absentee or mail-in ballots have been rejected this year for being late.

NPR's Mary Louise Kelly visited a county in Pennsylvania to see what challenges lay ahead for election night in a critical swing state.

Voting By Mail Will Increase Dramatically This Year — And It Could Get Messy