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How this site works

Ballot by Mail is an independent project with no organization, funding, or party behind it. Newsrooms and civic groups start here.

It It answers one question, whether you can vote by mail where you live, and points you at the office that actually handles it. It doesn't take positions, doesn't run ads, and doesn't store anything you type.

Where the answers come from

Each state is sorted into one of three categories using three sources that agree with each other: the National Conference of State Legislatures' absentee tables, the Movement Advancement Project, and the U.S. Vote Foundation. Where a state changed recently (Connecticut, July 2026) the statute and Ballotpedia were checked directly. Deadlines come from Vote.org's 2026 table; North Carolina was cross-checked against its State Board of Elections because the two disagreed. What has not been done: opening all 51 official state pages and confirming every rule and deadline against primary text. That's the next verification pass, and the daily page monitor exists partly so changes surface before it's finished. Every entry carries the date it was last checked, and the official site always wins over anything here.

State rules last checked 2026-09-09. Deadlines last checked 2026-09-09.

Registration deadlines come from Vote.org's table. Early in-person voting dates come from the Center for Election Innovation & Research's 2026 report (data as of April 8, 2026). Signature-cure rules come from NCSL Table 15 (updated Aug. 31, 2026). Permanent mail-list rules come from NCSL (May 2026) and the U.S. Vote Foundation. Witness, notary, and signature-verification rules come from NCSL Table 14.

Primary-source verification

Each state's official absentee page is being read directly and compared to what this site says, fact by fact. So far: 47 verified, 4 corroborated, 0 partially verified (some facts still rest on a secondary source, noted below), 0 blocked by the state's bot protection, 0 not yet checked.

Corroborated is a weaker claim than verified and we keep them separate deliberately. In four states the fact we publish is not on the state's own website at all — not buried, absent. New Jersey's vote-by-mail page was extracted in full, 28,000 characters, with no request deadline in it. New Mexico's the same at 13,000. Virginia's page mentions the deadline for applying several times without ever printing the date. Missouri never states a ballot return deadline across four sources including its own application form. For those, we read the statute and a second independent tabulation of it, and publish only where they agree. It is the best available answer, and it is not the state telling you directly, so we say which one you are getting.

Why ballots get rejected, and where those numbers come from

The rejection rate shown for your state is computed directly from the EAC's 2024 Election Administration and Voting Survey, which we download and re-process from eac.gov rather than copying from a secondary summary. Across 6,461 reporting jurisdictions and 47,957,093 returned mail ballots, 1.22% were rejected, which matches the EAC's own published figure. We also publish a rate for 2,934 individual counties. The survey is biennial, so 2024 is the most recent comparable election; treat it as a measure of structural risk in your county rather than a live number.

The "Will your ballot count?" check on each state page is built on published research, not opinion. The EAC's 2024 Election Administration and Voting Survey found roughly 1.2% of mail ballots were rejected nationally, with non-matching signatures accounting for about 41% of all rejections. A USC Center for Inclusive Democracy analysis of California's 2024 election found 59% of rejections were signature mismatches, 27% arrived late and 11% had no signature. Research by Baringer, Herron and Smith found first-time mail voters are up to three times likelier to be rejected. A University of Pennsylvania study of Pennsylvania's 2024 election found voters notified of a defect before Election Day were 25 percentage points likelier to have their vote counted.

That is why the check ranks signature and timing first: together they are most of the risk, and both are within your control.

Nationally in 2024, 584,463 of 47,957,093 returned mail ballots were rejected (1.22%). Reasons given:

ReasonShare of rejections
Signature didn't match the one on file40.7%
Other or unspecified (largely further signature problems)18.1%
Arrived after the deadline17.8%
Voter had already voted in person11.1%
No signature at all10%
Envelope problems (no secrecy sleeve, unsealed, ballot missing)8.5%
No witness signature5.6%

Source: U.S. Election Assistance Commission, Election Administration and Voting Survey 2024. Per-state rates shown in the check on each state page come from the same survey. The next survey, covering 2026, is expected in 2027.

When two sources disagree

Every fact on this site used to rest on a single reading. That is fine while the reading is right and silently awful when it isn't, because nothing is there to catch it. The highest-stakes fact — whether a mailed ballot must ARRIVE by Election Day or merely be POSTMARKED by it — now rests on two independent readings: the state's own page, and NCSL's tabulation of the underlying statute.

Right now, on that question, the two sources agree for 50 of the 51 jurisdictions. There are no unexplained disagreements. Kansas is marked contested: the statute and a court order currently point different ways, and both are shown.

Second source: NCSL, Table 11: Receipt and Postmark Deadlines for Absentee/Mail Ballots, which NCSL last updated Wed, Aug 19; read by us Thu, Sep 10. We compare the arrive-by versus postmark-by distinction only. Exact clock times are worded too differently between sources to compare mechanically without raising false alarms, and that distinction is the one that decides whether a late-arriving ballot counts. NCSL's deadlines for military and overseas voters differ in most states and are not what this site publishes.

Watching the legislatures

A daily job searches all fifty state legislatures through LegiScan for mail-voting bills and flags enacted ones for review, because official voter pages are often updated long after a law changes. Legislative data used under CC BY 4.0.

Languages

Spanish, Chinese, Vietnamese, Korean, and Tagalog versions are machine-drafted and marked as awaiting native review on the page. Dates, state notes, and return rules are shown in English in every language so the numbers can't drift in translation.

What it doesn't do

Alerts

If you sign up for alerts, we store your email address, the state you chose, and the language. We email you only when that state's rule, a deadline, its official election page, or the federal USPS rules change, and only after you click a confirmation link. Every email has an unsubscribe link, and unsubscribing deletes you from the send list immediately. Nothing else is collected and the list is never shared or sold.

County and court data

Your county is looked up from the HUD USPS ZIP-County Crosswalk (a federal dataset). The ZIP is sent to that lookup and cached; it's never tied to you. Court filings come from CourtListener, the Free Law Project's public archive of federal dockets, shown in the clerk's own words.

Open data

Everything the checker knows is at /data/states.json. There's also a tiny API: /api/state?zip=43215 or /api/state?state=TX. Both are free to use with attribution and re-check everything against official sources before you rely on it.

Report an error

If something here is wrong, use the report form or email fix@ballotbymail.org with the state and a link to the official source. Corrections show up in the changelog below.

Changelog

State list

All-mail state (9): California, Colorado, District of Columbia, Hawaii, Nevada, Oregon, Utah, Vermont, Washington

No-excuse absentee (29): Alaska, Arizona, Connecticut, Florida, Georgia, Idaho, Illinois, Iowa, Kansas, Maine, Maryland, Massachusetts, Michigan, Minnesota, Montana, Nebraska, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Dakota, Virginia, Wisconsin, Wyoming

Excuse required (13): Alabama, Arkansas, Delaware, Indiana, Kentucky, Louisiana, Mississippi, Missouri, New Hampshire, South Carolina, Tennessee, Texas, West Virginia

Money

The supplies section on the home page uses affiliate links. If you buy something through them the site earns a small commission. That's it. No ads, no sponsors, no data sales.