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 outcomes of modern presidential elections or most major statewide races. Isolated cases do happen, are often detected and prosecuted, and have occasionally affected very close local contests, but the overall scale is tiny relative to the hundreds of millions of votes cast per election cycle.[1]

Key Evidence from Studies and Databases

Multiple independent analyses, government investigations, academic research, and even data from conservative sources converge on this conclusion:

Analyses of this same database by Brookings Institution researchers show vanishingly small rates. For example:

Fraud that is caught is typically individual (double voting, voting while ineligible due to felony status or death of a relative, registration errors mischaracterized as fraud, or small-scale absentee schemes) rather than large coordinated conspiracies. Some historical or local cases have involved more organized misconduct (e.g., machine politics in earlier eras, or the 2018 North Carolina 9th Congressional District absentee ballot fraud that led to a new election). A handful of very close local or state races have been overturned or required reruns due to proven irregularities.[9][10]

Why Rates Are So Low and Safeguards Exist

U.S. elections have multiple overlapping protections: voter registration systems with cross-checks, signature verification (especially for mail ballots), voter ID requirements in many states, provisional ballots, bipartisan poll watchers and observers, risk-limiting audits, chain-of-custody rules for ballots, and criminal penalties. Clerical errors, outdated voter rolls, or administrative mistakes are sometimes mislabeled as “fraud” in public discourse, but investigations usually distinguish them.[5]

Undetected fraud is theoretically possible (as with any crime), but extensive post-election audits, recounts, bipartisan canvassing, and statistical analyses have not uncovered evidence of systemic or outcome-determinative fraud in modern national elections. Claims of “rampant” or “millions” of illegal votes have repeatedly failed scrutiny.[11]

Context and Caveats

In short, while perfect integrity is the goal and isolated fraud warrants vigilance, the evidence overwhelmingly shows U.S. elections are secure and that voter fraud is not a problem of a scale that threatens results or democratic legitimacy. For the latest case details, the Heritage database and state election board reports are publicly available for review.