← Back to the States

Glossary of Terms

Registration Deadline
The last date by which eligible voters must register before an election in order to participate. Deadlines vary by state and may differ for in-person, online, and mail-in registration.
Same-Day Registration
A policy that allows eligible citizens to register to vote and cast a ballot on the same day, including on Election Day itself. Not all states offer this option.
Online Registration
The ability to submit a voter registration application electronically through a state's website, rather than by mail or in person.
Mail Registration
The ability to register to vote by completing a paper registration form and submitting it by mail to the appropriate election office.
In-Person Registration
The ability to register to vote by visiting a designated government office, such as a county clerk's office or DMV, and completing a registration form on site.
Early Voting
A period before Election Day during which voters can cast their ballots in person at designated polling locations. The length of the early voting period varies by state.
Absentee Voting
A method that allows voters to request and submit a ballot by mail before Election Day. Some states require voters to provide a valid reason (excuse) for voting absentee.
Mail-In Voting
A voting method where ballots are automatically mailed to all registered voters without requiring a specific request. States that use this approach conduct elections primarily or entirely by mail.
Voter ID Requirements
The identification documents a voter must present at the polls in order to cast a ballot. Requirements range from no ID needed to strict photo ID, depending on the state.
No Excuse Required
A policy where voters can request an absentee or mail-in ballot without needing to provide a reason, such as illness, travel, or disability.
Excuse Required Mail-In
A policy where voters must provide a qualifying reason, such as being out of the county on Election Day or having a physical disability, in order to vote by mail.
Felony Voting Rules
State laws governing whether and when people with felony convictions can vote. Policies range from no restrictions to permanent disenfranchisement, with most states restoring rights at some point after sentencing.
Proof of Residency
Documentation that verifies a voter's current address within the state or jurisdiction where they are registering. Common forms include utility bills, bank statements, or government-issued documents.
Proof of Citizenship
Documentation that confirms a voter is a U.S. citizen. While all states require citizenship to vote, only some require documentary proof such as a birth certificate or passport during registration.
Valid Photo ID
A government-issued identification card that includes a photograph of the holder. Examples include a driver's license, state ID card, passport, or military ID.