Yes, double voting is illegal. Casting more than one ballot in the same federal election is a felony under 52 U.S.C. § 10307(e), punishable by up to five years in federal prison and a fine of up to $10,000 per violation.1Office of the Law Revision Counsel. 52 USC 10307 – Prohibited Acts – Section: (e) Voting More Than Once Every state also prohibits it, and most treat it as a felony. That said, the election system is built to catch honest mistakes before they turn into crimes, and showing up at a polling place after mailing a ballot is not automatically a violation.
What the Federal Law Prohibits
52 U.S.C. § 10307(e) makes it a crime to vote more than once in any election that includes a federal office — president, senator, representative, or delegate. That covers general elections, primaries, and special elections whenever a federal candidate appears on the ballot. The penalty is a fine of up to $10,000, up to five years in prison, or both.1Office of the Law Revision Counsel. 52 USC 10307 – Prohibited Acts – Section: (e) Voting More Than Once
One carve-out in the statute matters: “votes more than once” does not include casting an additional ballot when all your prior ballots were invalidated. If your mail ballot was rejected for a signature problem and you then voted in person, the second vote isn’t double voting, because the first ballot was already void.2Office of the Law Revision Counsel. 52 USC 10307 – Prohibited Acts – Section: (e)(3)
A separate federal statute, 52 U.S.C. § 20511, targets a broader category of election fraud: knowingly procuring or submitting ballots that are materially false, fictitious, or fraudulent. That provision explicitly requires a “knowing and willful” mental state, meaning prosecutors must prove the person deliberately submitted a fraudulent ballot.3Office of the Law Revision Counsel. 52 USC 20511 – Criminal Penalties
What Actually Counts as Double Voting
Most situations fall into two recognizable patterns, and not all involve someone trying to cheat.
Voting in Two States
People who own homes in two states or split time between locations sometimes end up registered in both places. Casting ballots in two states on the same election day, when a federal office appears on both ballots, counts as voting more than once, even if the voter picked different offices in each place. The statute was tightened specifically to close that gap after an appeals court overturned a conviction involving ballots cast for different offices in different states. Several states have since adopted parallel language.
College students run into a version of this. A student registered at their university may still be registered at a parent’s address. Voting by absentee ballot in one location and in person at the other triggers the same violation, whether or not the student realized both registrations were active.
Mailing a Ballot and Then Voting in Person
This is where most accidental situations arise. A voter mails a ballot, worries it won’t arrive on time, and shows up at a polling place on election day. Even if both ballots contain identical choices, submitting a second countable ballot is the violation. The law doesn’t care whether your selections matched.
The system is built to catch this before it becomes a problem. If election officials have already received your mail ballot, the poll book will show it when you check in, and you’ll be directed to cast a provisional ballot rather than a regular one. That provisional ballot is set aside and counted only if officials later confirm your mail ballot wasn’t already processed. That’s the safeguard working, not a crime.
Federal Penalties
A conviction under 52 U.S.C. § 10307(e) carries a maximum fine of $10,000 and up to five years in federal prison for each count. These cases are prosecuted by the Department of Justice.1Office of the Law Revision Counsel. 52 USC 10307 – Prohibited Acts – Section: (e) Voting More Than Once
A federal felony conviction also creates lasting consequences beyond the sentence. It can disqualify you from holding public office, strip professional licenses, and, depending on your state, end your right to vote for years or permanently. The collateral consequences often outweigh the prison time.
State Penalties
Most states classify double voting as a felony, though severity varies widely. A handful treat a first offense as a misdemeanor and escalate for repeat violations. Penalties across states range from fines of a few hundred dollars to fines exceeding $100,000 in the most aggressive jurisdictions, with prison terms running from one year up to ten. Some states also impose automatic disenfranchisement as part of the sentence.
Probation and community service appear frequently as alternatives or additions to incarceration, particularly for first-time offenders where the conduct looks careless rather than deliberate. Even where the sentence is light, the felony record itself creates barriers to government employment, professional licensing, and security clearances.
Losing Your Right to Vote
A double-voting conviction can cost you the ability to vote at all. The impact depends on where you live. Three jurisdictions never revoke voting rights, even during incarceration. About half the states restore voting rights automatically on release from prison. Others require completion of parole and probation before restoration. Roughly ten states impose indefinite disenfranchisement for certain felonies, require a governor’s pardon, or mandate a waiting period after the sentence is fully served. Some states apply harsher restoration rules to election-related felonies specifically.
How Double Voting Gets Caught
Detection happens in layers, from real-time checks on election day to interstate data sharing that can flag problems months later.
Modern electronic poll books track which voters have already received a mail ballot or voted early. When you check in at a precinct, the system cross-references your name against those records in real time. If a mail ballot is already logged under your name, the poll worker gets an alert and offers you a provisional ballot.4U.S. Election Assistance Commission. How Do Election Officials Prevent Someone From Voting Twice?
Across state lines, the Electronic Registration Information Center (ERIC) lets member states compare voter registration rolls and motor vehicle records. Member states submit data at least every 60 days, and ERIC’s matching software identifies voters who appear to be registered in more than one state or who may have cast ballots in multiple jurisdictions.5ERIC, Inc. How ERIC Works States that have withdrawn from ERIC generally use alternative data-sharing arrangements, including bilateral exchanges with other states.
After polls close, election offices reconcile the total number of ballots cast against the number of voters who checked in and compare signatures on mail-in envelopes against in-person voter logs. Any voter whose name appears in both records gets flagged during certification. That final-pass review catches cases that slipped through real-time checks, particularly when a mail ballot arrived after election day from a voter who also showed up at a precinct.
Provisional Ballots: The Safety Net
If there’s one thing worth understanding, it’s that provisional ballots exist specifically to prevent innocent confusion from becoming a crime. Federal law requires every state to offer a provisional ballot to any voter whose eligibility is in question at check-in, including situations where someone already received a mail ballot, where a voter’s name doesn’t appear on the rolls, or where an official challenges eligibility.6Office of the Law Revision Counsel. 52 USC 21082 – Provisional Voting and Voting Information Requirements
The voter signs a written statement affirming they are registered and eligible, then casts a ballot that is kept physically separate from regular ballots. Officials later verify whether the voter was actually eligible and whether another ballot already exists. If a duplicate is found, the provisional ballot is rejected and never counted. If no prior ballot exists, it gets counted normally.7U.S. Election Assistance Commission. EAVS Deep Dive: Provisional Ballots
States are also required to provide a free system, usually a website or toll-free number, where you can check whether your provisional ballot was counted and, if not, why it was rejected.6Office of the Law Revision Counsel. 52 USC 21082 – Provisional Voting and Voting Information Requirements
What to Do If You Already Mailed a Ballot
Voters who mailed a ballot and then want to vote in person — perhaps because they made an error or changed their mind about a race — have options in many states, though the process varies.
The general pattern: if your mail ballot hasn’t been received and processed yet, many states let you vote a regular ballot in person, sometimes after surrendering the unsubmitted mail ballot or signing an affidavit. If your mail ballot has already been received, some states still allow you to cancel it and cast a new ballot, but only before a state-specific deadline, often a week or more before election day. After that deadline, or in states that don’t allow cancellation, you’ll cast a provisional ballot, and officials will sort out which one counts.
Showing up to vote in person after mailing a ballot is not automatically a crime. The system is designed to handle exactly this situation through provisional balloting. The violation occurs when someone deliberately submits two countable ballots, not when a voter goes through the proper channels to ensure one valid vote gets recorded.
How Often People Actually Get Prosecuted
Despite the penalties on paper, actual prosecutions are rare. When states conduct large-scale reviews, the pattern is consistent: initial flagging identifies thousands of potential duplicate voters, but investigation narrows that number to a handful of confirmed cases. In one widely studied review, a state flagged nearly 11,000 potential double voters from a single election cycle; after investigation, officials documented only eight actual cases.
Confirmed cases do result in felony charges and convictions, typically against individuals who voted by absentee ballot in one state and in person in another. But the volume is tiny relative to the tens of millions of ballots cast in any given election. Detection systems work well enough that most attempts are caught before a second ballot is counted, and many flagged cases turn out to be data-entry errors, father-son name matches, or clerical mistakes rather than intentional fraud.