Every election, some mail ballots are set aside before they are counted because of a problem with the envelope rather than the ballot inside it. The most common problems are a missing signature or a signature that election workers judge does not match the one on file. In many states, that is not the end of the story. “Curing” is the process of fixing the problem so the ballot can be counted.
According to the National Conference of State Legislatures, 35 states plus the District of Columbia have a process for voters to correct signature problems. Pennsylvania is a special case: counties there decide for themselves whether to offer one. This guide explains how curing works, what you should do if you get a notice, and the deadlines in the states where they are clearest.
- Curing means fixing a problem with your mail ballot envelope, usually a missing or mismatched signature, so the ballot can be counted.
- Per NCSL, 35 states and D.C. have a signature cure process. In Pennsylvania, counties decide.
- Deadlines vary widely: some states require the fix by the close of polls on Election Day; others allow it for days or weeks afterward.
- Act the same day you receive a notice. Bring or send exactly what the notice asks for, often a signed statement and a copy of ID.
- You can avoid most problems by signing in the right place and returning your ballot early, which leaves time to fix anything.
Why mail ballots get flagged
Election offices verify mail ballots before they are counted. The exact checks are set by state law, but the problems that lead to a ballot being set aside fall into a few groups:
- No signature on the return envelope or affidavit.
- A signature that does not match the one in the voter’s registration record. Signatures change with age, injury or haste, which is one reason cure processes exist.
- Missing or mismatched identifying information, such as an ID number or date of birth, in states that require it on the envelope.
- Other envelope defects, such as an unsealed envelope or an incomplete affidavit, which some states also allow voters to fix.
A late-arriving ballot is a different issue. If your ballot arrives after your state’s receipt deadline, it generally cannot be cured. Thirty-five states require mailed ballots to arrive by Election Day, according to NCSL, so check your state’s receipt deadline as well as its cure rules. Our early and mail voting explainer covers the basics.
How curing works, step by step
- The election office notices the problem. Many states set a short timeline for this. Iowa requires notice within 24 hours of receipt, for example, and New Jersey requires a cure letter within 24 hours of rejection.
- You are notified. Depending on the state, notice comes by mail, phone, email or text. Michigan’s law, for instance, requires notice by the end of the next business day using any of those methods.
- You respond with what the notice asks for. That is usually a signed cure form or affidavit, sometimes with a copy of an ID. In some states you can return it by mail or email; others require an in-person visit.
- The ballot is counted if the fix arrives before the deadline and satisfies the requirement.
Two states take a different approach. In Massachusetts and Minnesota, NCSL notes, the remedy is a replacement ballot rather than a correction to the original envelope.
Cure deadlines in key states
The table below lists deadlines as summarized in NCSL’s cure table, updated August 31, 2026. We have included only states where the deadline is stated clearly; NCSL itself flags inconsistent wording for a few others. Always follow the deadline on the notice you receive, and confirm with your local election office.
| State | Cure deadline | Notes |
|---|---|---|
| Arizona | 5 days after the election | Officials must make reasonable efforts to contact you |
| Colorado | 8 days after | Mailed notice within 3 days of discovery |
| Connecticut | Close of polls, Election Day | Missing signature only |
| Florida | 5 p.m., 2nd day after | Missing or mismatched signature |
| Georgia | 3 days after | With ID and affidavit; also covers missing or mismatched identifying information |
| Illinois | 14 days after | Mailed notice within 2 days of rejection |
| Iowa | Close of polls, Election Day | Incomplete or missing affidavit |
| Kentucky | Close of polls, Election Day | |
| Michigan | 5 p.m., 3rd day after | Notice by next business day |
| Nevada | 5 p.m., 6th day after | Missing or mismatched signature |
| New Jersey | 11 days after a general election | Cure letter within 24 hours |
| North Carolina | Noon, 5th business day after | |
| Ohio | 4th day after | Missing or mismatched information |
| Oregon | 21st day after | |
| Virginia | Noon, 3rd day after | Covers incomplete or incorrect ballots |
| Washington | Day before certification | Certification is 21 days after the election |
In states where the cure deadline is the close of polls, such as Connecticut, Iowa and Kentucky, a ballot mailed late may not be reviewed in time for you to hear about a problem and fix it. If you live in one of these states, returning your ballot early is the only way to keep the cure option open.
What to do if you get a cure notice
- Read the deadline first. Some windows are only two or three days. Put the date on your calendar.
- Follow the instructions exactly. If the form asks for a copy of ID, include it. If it must be signed in ink or returned in person, do that.
- Confirm the notice is real. Legitimate cure notices come from your county or local election office. If you are unsure, call the office using the number on its official website, not a number in a text message.
- Check your ballot status. Many states offer an online ballot tracker through the secretary of state or county election website. It will often show whether your ballot was accepted or needs attention.
- Ask about other options. In some states, if it is too late to cure, you may be able to vote in person or cast a provisional ballot instead. Ask your local office what applies to you.
How to avoid needing a cure at all
Most cure problems are preventable. Sign the envelope where the instructions say, using your usual signature. Fill in every required field, including any ID number or date your state asks for. Seal the envelope. And return the ballot early, by mail well ahead of the deadline or at an official drop box or election office where your state offers one. Early return gives the office time to spot a problem and gives you time to fix it.
Cured ballots are also one reason vote totals keep changing after election night. Ballots counted after a successful cure are added during the canvass, which we explain in After Election Day and in our broader guide to how votes are verified, counted and certified.
Frequently asked questions
What does it mean to cure a ballot?
Curing is fixing a problem with your mail ballot envelope, such as a missing or mismatched signature, so the ballot can be counted. The process and deadline are set by state law.
How many states let voters fix signature problems on mail ballots?
According to NCSL’s table updated Aug. 31, 2026, 35 states plus the District of Columbia have a signature cure process. In Pennsylvania, counties decide whether to offer one.
How will I know if my mail ballot was rejected?
States with cure processes require the election office to notify you, by mail, phone, email or text depending on the state. Many states also have online ballot trackers that show whether a ballot was accepted.
How long do I have to cure my ballot?
It depends on the state. Some, like Iowa and Kentucky, require the fix by the close of polls on Election Day. Others allow days afterward: for example, 3 days in Georgia, 4 in Ohio, 6 in Nevada and 14 in Illinois, per NCSL.
Can I cure a ballot that arrived late?
Generally no. Curing addresses defects such as signatures. A ballot that arrives after your state’s receipt deadline usually cannot be counted, which is why returning it early matters.
A flagged ballot is fixable in most states, but only if you move fast. Return your ballot early, check your state’s ballot tracker, and if you get a cure notice, treat its deadline as the real Election Day for your vote.