Voter Registration and Mail Voting

This article explains how voter registration and mail voting work for Philadelphia residents. It is general civic information, not legal advice; deadlines and rules can change, so confirm with the City Commissioners before relying on it. Details are as of October 2026.^[1]

1 Registering and updating your registration

To register, a person must be a U.S. citizen, a Pennsylvania resident for at least 30 days before the election, and at least 18 by Election Day; 17-year-olds may register if they will be 18 by the election. Registration is available online at the state's voter services site, by mail, in person at the Commissioners' office, and automatically through some PennDOT transactions. The deadline is 15 days before the election; for the May 2026 primary it was May 4, and for the November 3, 2026 general it is October 19.^[2] Party registration matters because primaries are closed; see Political Parties in Philadelphia.

2 Voting by mail

Since Act 77 of 2019, any Pennsylvania voter may vote by mail without giving a reason. A voter applies to the county board, receives a ballot and two envelopes, marks the ballot, seals it in the inner secrecy envelope, places that in the outer return envelope, signs and dates the declaration, and returns it. Applications are due seven days before the election; for November 3, 2026, that is October 27. Completed ballots must be received by the county by 8:00 p.m. on Election Day; postmarks do not count in Pennsylvania. Voters may return ballots by mail, in person at the Commissioners' office, or at drop boxes and satellite offices that the Commissioners designate; check locations and hours at vote.phila.gov. Ballots without an inner secrecy envelope, so-called naked ballots, are not counted under state court rulings.

3 Identification

Voters casting a ballot at a precinct for the first time must show an acceptable ID. For mail ballots, the applicant must supply a driver's license number or the last four digits of a Social Security number on the application, and the same identifier must be matched on the return envelope. Anyone whose eligibility is questioned may vote by provisional ballot.

4 Disputed rules

The requirement to handwrite a date on the outer envelope has been litigated for years. In August 2025 the Third Circuit ruled that discarding mail ballots over an incorrect or missing envelope date is unconstitutional, according to Law.com. The Republican National Committee then asked the U.S. Supreme Court to take up the Pennsylvania dispute (The Hill, February 2026), and on June 29, 2026, Reuters and other outlets reported that the Court had signaled interest, asking the Trump administration for its views.^[3] As of early October 2026 no final Supreme Court decision on the date requirement had been reported; check the Department of State and the Commissioners for the rule that applies to the November election, and make sure to sign and date the outer envelope as the instructions direct. Other issues in dispute include pre-canvassing (counting before Election Day), drop boxes and correcting defective ballots, called ballot curing, which counties handle differently. See Elections in Philadelphia.

5 If something goes wrong

Voters who do not receive a mail ballot can request a replacement or vote provisionally at their polling place after surrendering the original. Problems at the polls can be reported to the Commissioners and the Pennsylvania Department of State. For a general help directory, see How to Get Help From the City.

See also: Council Districts and Wards, How to Find Your Elected Officials, Ballot Questions and Charter Changes.

References

1. Pennsylvania Department of State, voter information (vote.pa.gov); Philadelphia City Commissioners (vote.phila.gov).
2. City of Philadelphia, "Key deadlines, mail ballot information... 2026 Philadelphia primary election" (phila.gov, May 13, 2026); Billy Penn, April 14, 2026.
3. Law.com, "Discarding 'Incomplete' Mail-In Ballots Is Unconstitutional, Third Circ. Rules" (August 26, 2025); The Hill, "RNC asks Supreme Court to take up Pennsylvania mail ballot fight" (February 11, 2026); Reuters, "Supreme Court asks Trump administration views on Pennsylvania mail-in ballot dispute" (June 29, 2026).