Is voter fraud a problem in the US?
I will research this using reliable sources, including government reports, academic studies, and databases of documented cases.No, voter fraud is not a significant or widespread problem in U.S. elections. It occurs occasionally as isolated incidents but at extremely low rates relative to the hundreds of millions of ballots cast, and it has virtually never altered the outcome of a major election (presidential, congressional, or statewide). Extensive research from academic studies, government investigations, fact-checkers, and databases of proven cases (including those compiled by conservative sources) consistently shows this.[1]
Scale of Documented Cases
The most comprehensive public tracking of proven cases (convictions, guilty pleas, civil penalties, judicial findings of fraud, or official overturns) comes from the Heritage Foundation’s Election Fraud Database. As of late 2025 updates, it lists roughly 1,500–1,620 instances spanning decades (many going back to the 1980s–2000s, with some earlier), resulting in about 1,300–1,380 criminal convictions plus other dispositions. Heritage itself describes this as a “sampling” intended to highlight vulnerabilities rather than a complete census, and notes cases involve Democrats, Republicans, and others.[2]
When placed in context:
Brennan Center reviews of multiple studies put impersonation fraud rates at 0.0003%–0.0025% (an American is more likely to be struck by lightning). Noncitizen voting is “vanishingly rare,” with studies and official referrals yielding dozens of cases (or fewer) amid tens of millions of votes in large jurisdictions.[5]
Recent aggressive enforcement (e.g., DOJ/DHS matching of voter rolls against immigration databases under the current administration) has produced hundreds of investigations and charges (around 160–240 for noncitizen-related offenses in recent periods, including some lawful permanent residents who improperly registered/voted, plus a smaller number of illegal aliens). These remain tiny fractions of registered voters (over 150–200 million) and ballots cast; large initial “potential” lists typically shrink dramatically upon investigation. Experts note this confirms rarity rather than a systemic crisis.[6]
Types of Fraud and Relative Frequency
Documented cases break down roughly as follows (drawing from Heritage and other trackers):
Mail voting fraud rates in recent cycles (using Heritage data) average around 0.000043% (roughly 4 cases per 10 million mail ballots). Studies (including of all-mail states like Oregon) find no evidence that expanded mail voting meaningfully increases overall fraud risk when safeguards like signature verification, barcode tracking, and bipartisan observation are in place.[7]
Many alleged “fraud” cases turn out to be clerical errors, data mismatches (common names/dates of birth), honest mistakes by voters, or outdated rolls—not intentional crime.
Impact on Outcomes and Systemic Risk
No credible evidence shows voter fraud has flipped a presidential election or other high-stakes federal races in modern times. Statistical claims alleging anomalies in 2020 (and similar cycles) have been repeatedly debunked by academics (e.g., Eggers et al., Grimmer et al.) as misunderstandings of data, normal patterns, or non-fraudulent explanations. Courts dismissed dozens of related lawsuits for lack of evidence.[8]
Local races with tiny margins have occasionally been affected or overturned due to fraud (a handful of cases), which is why laws criminalize it and why safeguards matter. CISA, election officials, and bipartisan observers consistently affirm that U.S. election infrastructure is secure, with paper trails, audits, chain-of-custody rules, and testing mitigating risks. Foreign actors focus more on disinformation than altering vote tallies.[9]
Why the Perception Differs from the Data
Fraud is illegal, prosecuted when found, and should be prevented through reasonable measures (list maintenance, ID where appropriate and non-burdensome, secure mail processes, audits). However, the evidence does not support treating it as a major threat that undermines the overall integrity or legitimacy of U.S. elections. Claims of widespread fraud sufficient to change national or major statewide results lack substantiation across left-, right-, and center-leaning sources and official records. Elections remain highly secure by design.
Citations (10)
- https://legalclarity.org/how-common-is-voter-fraud-what-the-evidence-shows/
Backs: “Extensive research from academic studies, government investigations, fact-checkers, and databases of proven cases (including those compiled by conservative sources) consistently shows this.”
- https://electionfraud.heritage.org/about
Backs: “Heritage itself describes this as a “sampling” intended to highlight vulnerabilities rather than a complete census, and notes cases involve Democrats, Republicans, and others.”
- https://brookings.edu/articles/how-widespread-is-election-fraud-in-the-united-states-not-very
Backs: “In Arizona, 36 cases over 25 years across >42 million ballots (≈0.0000845%). In Pennsylvania, 39 cases over 30 years across >100 million votes. No outcomes were altered by ballot fraud.”
- https://www.forwardky.com/voter-fraud-claims-persist-the-numbers-tell-a-different-story/
Backs: “A Hearst Television national investigation identified 513 proven cases (convictions or court actions) since 2016 amid >685 million votes cast—a minuscule fraction. Only about 15 led to overturned results or new elections, nearly all in small local races.”
- https://www.brennancenter.org/our-work/research-reports/noncitizen-voting-vanishingly-rare
Backs: “Noncitizen voting is “vanishingly rare,” with studies and official referrals yielding dozens of cases (or fewer) amid tens of millions of votes in large jurisdictions.”
- https://www.cnn.com/2026/10/29/politics/trump-administration-noncitizen-voter-fraud-prosecutions-vis
Backs: “These remain tiny fractions of registered voters (over 150–200 million) and ballots cast; large initial “potential” lists typically shrink dramatically upon investigation. Experts note this confirms rarity rather than a systemic crisis.”
- https://legalclarity.org/voter-fraud-statistics-types-rates-and-prosecutions/
Backs: “Studies (including of all-mail states like Oregon) find no evidence that expanded mail voting meaningfully increases overall fraud risk when safeguards like signature verification, barcode tracking, and bipartisan observation are in place.”
- https://knowledge.uchicago.edu/records/m5ztb-ty079
Backs: “Statistical claims alleging anomalies in 2020 (and similar cycles) have been repeatedly debunked by academics (e.g., Eggers et al., Grimmer et al.) as misunderstandings of data, normal patterns, or non-fraudulent explanations.”
- https://www.cisa.gov/news-events/news/statement-cisa-director-easterly-security-2024-elections
Backs: “election infrastructure is secure, with paper trails, audits, chain-of-custody rules, and testing mitigating risks. Foreign actors focus more on disinformation than altering vote tallies.”
- https://www.degruyterbrill.com/document/doi/10.7591/9780801459061/html
Backs: “Academic works (e.g., Lorraine Minnite’s The Myth of Voter Fraud, Justin Levitt’s analyses) conclude deliberate individual voter fraud is rare; irregularities more often stem from administrative complexity.”