Is voter fraud a widespread issue? I'll search the latest research and data to give you a fact-based overview.
In the United States voter fraud exists, but research, audits and law enforcement data consistently describe it as extremely rare and not at a scale to affect statewide or federal election outcomes.
What the studies say
Bottom line across independent studies is that fraud rates are fractions of a percent:
•The Brennan Center for Justice found instances of voter fraud occur at a rate between 0.0003% and 0.0025%
•A widely cited Brennan Center analysis found that voter impersonation occurs at a rate between 0.0003% and 0.0025%
•Another summary of Brennan Center work puts rates between 0.00004% and 0.0009% in studied elections
•A Massachusetts Institute of Technology study of mail ballots over two decades called mail-in fraud "exceedingly rare" and reported rates on the order of 0.00006 percent of votes nationally
•Reviews summarized as rates on the order of 0.00000017% to roughly 0.000096% in studied periods
•Another commonly cited compilation found a 0.000062% fraud rate based on billions of ballots
Researchers also emphasize that many alleged instances are mistakes rather than intentional fraud, and that in-person voter impersonation on Election Day is virtually non-existent. The Brennan Center has said "It is more likely that an American will be struck by lightning than that he will impersonate another voter at the polls".
What the prosecution record shows
The most-cited public compilation is the conservative Heritage Foundation's Election Fraud Database, which is described as a sampling not an exhaustive list.
•It lists roughly 1,561 "proven instances" yielding about 1,325 convictions across its time window
•Another description lists 1,619 cases from 1982 to 2025: about 1,380 criminal convictions, 138 diversion programs, 50 civil penalties and 50 official or court findings
•A Brookings review of that data noted that even that collection, when parsed, reveals a minuscule rate of fraudulent votes and no proven outcome-changing schemes
As context, those ~1,300-1,600 cases span decades in which billions of ballots were cast.
For federal elections specifically, comprehensive reviews put the rate of voter fraud in federal contests at essentially zero for practical purposes.
Government assessments of recent elections have reached the same conclusion:
•The Cybersecurity and Infrastructure Security Agency (CISA) called the 2020 election the most secure in American history and issued a statement "There is no evidence that any voting system deleted or lost votes, changed votes or was in any way compromised."
•The same statement was issued jointly by CISA on Nov 12, 2020: "There is no evidence that any voting system deleted or lost votes, changed votes, or was in any way compromised,"
•Attorney General William Barr stated in December 2020 that the Department of Justice had not uncovered evidence of voter fraud "on a scale that could have" affected the outcome
Studies have consistently shown that voter fraud is a vanishingly rare phenomenon and that research indicates the occurrence is "infinitesimally small and almost never affects election outcomes".
Isolated cases do happen
Recent enforcement shows fraud is rare but not never:
•In Massachusetts, Yupeng Sun, a Chinese national, was charged with voter fraud after allegedly submitting an online voter registration impersonating another Chinese national residing in the state who had legal permanent resident status
•In 2024, according to a federal indictment, one individual was one of 70 people the Trump administration has charged in voting fraud cases that year
•A ProPublica analysis of DOJ data found that between January 2025 and May 2026, fewer than 150 suspected noncitizen voters were referred for federal prosecution and 41 were charged with illegal voting or related election crimes, with fourteen resulting in convictions or guilty pleas through May, compared to more than 150 million people who voted in the 2024 presidential election
•Collections of prosecuted incidents show modest counts: about 20 cases brought in 2024 involved charges ranging from ineligible voting to false registrations
Other reviews note that while fraud has occurred, the rate is infinitesimal.
Why the debate continues
1.Definition matters: Databases include categories like duplicate voting, false registration, absentee-ballot fraud, ineligible voting by noncitizens, and vote buying. Brennan analysts concluded Heritage's compilation contains very few examples of in-person impersonation — only about ten cases — and roughly 41 cases of noncitizen voting across the period covered.
2.Scale vs. existence: Critics of restrictive voting laws argue the data shows no evidence of widespread, coordinated fraud that would require new barriers, while supporters of stricter integrity measures point to the Heritage database as proof that fraud is real and should be prevented even if rare, noting fraud that is never caught cannot be counted.
In summary, every credible national study and federal security review describes systematic, outcome-changing voter fraud as not occurring in modern U.S. elections, while law enforcement continues to detect and prosecute isolated individual cases at a rate of a few per million votes cast.