Is voter fraud a problem in the US?

No, voter fraud is not a significant or widespread problem in U.S. elections. It occurs at extremely low rates—typically measured in thousandths or hundred-thousandths of a percent of ballots cast—and there is no credible evidence that it has altered the outcome of any modern federal election (presidential or congressional). Isolated cases happen and are prosecuted, but they are rare relative to the hundreds of millions of votes cast per election cycle, and robust safeguards (bipartisan observers, audits, signature verification, voter ID in many states, cross-checks of rolls, etc.) help detect and deter them.[1]

Key Evidence from Studies and Databases

Multiple independent analyses, academic research, government investigations, and even data from the conservative Heritage Foundation’s Election Fraud Database (which compiles proven cases ending in convictions, civil penalties, diversions, or official findings) consistently show this:

•Heritage Foundation database: As of recent updates (around 2024–2025/2026), it lists roughly 1,500–1,620 proven instances spanning decades (often back to the 1980s or earlier), with the majority resulting in convictions. These cover all types (absentee/mail fraud, false registration, double voting, noncitizen voting, impersonation, vote buying, etc.) across local, state, and federal elections. In context, this is a tiny fraction of the billions of ballots cast over that period (e.g., ~2+ billion in federal general elections alone since the early 1980s). Heritage itself notes it is a sampling, not exhaustive, but even maximizing the numbers yields rates around 0.00007% or lower.[2]

•Brookings Institution analyses of Heritage data: In battleground/swing states, the rates are minuscule and have never flipped outcomes. Examples:

•Arizona: 36 cases over 25 years and ~42.6 million ballots → 0.0000845%.

•Pennsylvania: 39 cases over 30 years and >100 million votes.

•Similar patterns in other close states; nationwide, a handful of cases amid tens or hundreds of millions of votes. No election outcomes altered by ballot fraud. Mail/absentee fraud averaged about 4 cases per 10 million mail ballots in recent cycles (2016–2022).[1]

•Brennan Center for Justice and other reviews: Incident rates for voter fraud (especially in-person impersonation) range from about 0.0003% to 0.0025% in closely studied elections. An American is more likely to be struck by lightning than to impersonate another voter at the polls. A 2014 review found 31 credible in-person impersonation cases out of >1 billion ballots (2000–2014). DOJ reviews of early 2000s elections found fraud rates as low as 0.00000013%, with no coordinated efforts.[2]

•Noncitizen voting: Vanishingly rare. Heritage has documented dozens of cases over decades (e.g., ~24–100 depending on the snapshot and timeframe). Brennan Center surveys of election officials overseeing millions of votes found rates like 0.0001%. State investigations (FL, OH, TX, GA, etc.) routinely start with large suspect lists that shrink dramatically after review (often due to naturalized citizens or errors), yielding tiny numbers of actual improper votes—none affecting outcomes. Recent federal charges (e.g., ~180 since early in a Trump term in one analysis) remain a tiny share of total votes and often involve confusion/mistakes rather than organized schemes; no evidence of partisan conspiracies at scale. Deterrents include criminal penalties, fines, and deportation risks.[3]

•Other findings: Hearst investigations found ~513 proven cases since 2016 amid >685 million votes. Academic papers (e.g., on 2020 claims) find no evidence of systematic fraud; statistical anomalies cited by skeptics are usually explained by normal factors like demographics, mail voting patterns, or data errors. Courts, state officials (including Republicans), CISA, and audits have repeatedly affirmed election integrity.[4]

Types of Fraud and Context

Fraud can include double voting, voting by ineligibles (felons where prohibited, noncitizens, deceased), absentee/mail issues, registration fraud, or rare impersonation. Mail voting has drawn scrutiny but shows no elevated fraud risk in studies (e.g., all-mail states like Oregon). Most “irregularities” turn out to be administrative errors, mismatches, or honest mistakes rather than intentional fraud.[5]

Prosecutions occur when cases are found, and rates of detection are high enough that widespread fraud would leave a clear trail (it doesn’t). Claims of “rampant” or outcome-changing fraud (e.g., millions of illegal votes) have been repeatedly debunked by data, courts, and officials across the spectrum. Beliefs in widespread fraud persist among some voters (often partisan) despite the evidence, which can erode trust even when unfounded.[6]

Bottom Line

Voter fraud is a real crime that officials take seriously and work to prevent/minimize—any amount is too much in principle. However, the data show it is not a material problem for the integrity or outcomes of U.S. elections. The system has layers of checks, and documented cases are statistically negligible. Concerns are better addressed through continued improvements in list maintenance, verification, and transparency rather than unsubstantiated claims of systemic failure. For the latest primary data, see the Heritage database, state election offices, or analyses from Brookings/Brennan.

Citations (6)

1brookings.eduNonprofits and think tanks
https://www.brookings.edu/articles/how-widespread-is-election-fraud-in-the-united-states-not-very/
Backs: “Isolated cases happen and are prosecuted, but they are rare relative to the hundreds of millions of votes cast per election cycle, and robust safeguards (bipartisan observers, audits, signature verification, voter ID in many states, cross-checks of rolls, etc.) help detect and deter them.”
2legalclarity.orgCommercial content
https://legalclarity.org/how-common-is-voter-fraud-what-the-evidence-shows/
Backs: “Heritage itself notes it is a sampling, not exhaustive, but even maximizing the numbers yields rates around 0.00007% or lower.”
3brennancenter.orgNonprofits and think tanks
https://www.brennancenter.org/our-work/research-reports/noncitizen-voting-vanishingly-rare
Backs: “Deterrents include criminal penalties, fines, and deportation risks.”
4forwardky.comNews and media
https://www.forwardky.com/voter-fraud-claims-persist-the-numbers-tell-a-different-story/
Backs: “Courts, state officials (including Republicans), CISA, and audits have repeatedly affirmed election integrity.”
5bbc.co.ukNews and mediaquality 0.72
https://www.bbc.co.uk/news/articles/ckeq3vezxlx1o
Backs: “Most “irregularities” turn out to be administrative errors, mismatches, or honest mistakes rather than intentional fraud.”
6frontiersin.orgAcademic
https://www.frontiersin.org/journals/political-science/articles/10.3389/fpos.2024.1493897/full
Backs: “Beliefs in widespread fraud persist among some voters (often partisan) despite the evidence, which can erode trust even when unfounded.”