Voter ID laws suppress legitimate votes more than they prevent fraud

What's this about?

People disagree about whether voter ID laws stop fraud or make voting too hard. The key question is whether strict ID rules cause more harm than good.

What supporters say

• Pretending to be another voter at a polling place seems very rare.
• Strict photo ID rules may stop few fake votes because this kind of fraud rarely happens.
• Some voters must find papers, travel far, miss work, or face office delays to get ID.
• These problems can hit some groups harder, even when total turnout changes little.

What critics say

• Not every voter ID law lowers the total number of people who vote.
• Results differ because states use different rules and make ID easier or harder to get.
• Some laws offer other ways to vote if someone lacks photo ID.
• Reports about all fraud types do not prove that polling-place ID checks would stop them.

The bottom line

Strict photo ID rules can place unfair costs on some legal voters, mainly when few easy options exist. We do not see clear proof that these strict rules stop many fake in-person votes.

Voter ID laws can make voting harder for some eligible people, but the evidence does not show that every such law lowers turnout overall. The strongest conclusion is narrower: strict photo-ID rules with poor access to alternatives are more likely to impose unequal costs than to deliver clearly demonstrated anti-fraud gains.

The case for

The central argument for the claim is that the type of fraud voter ID is designed to stop—in-person impersonation at polling places—is extremely rare. The National Academies and MIT Election Lab have both described it as uncommon. That makes it difficult to show that strict ID checks prevent large numbers of fraudulent votes. 1

Broader claims about election fraud do not settle the issue. Fraud tallies may include registration problems, absentee-ballot misconduct or administrative mistakes. But those are not necessarily problems that a voter showing identification at a polling place would prevent. A broad fraud count is not evidence of an ID-preventable impersonation problem (see Figure 3). 3

The burden of obtaining an acceptable ID can also be significant, especially under strict photo-ID laws. Eligible voters may need birth certificates or other documents, travel to government offices, take time off work and deal with bureaucratic hurdles. The Government Accountability Office has documented these costs, which do not fall equally on all voters. 2

Research has found that strict ID requirements can have different effects on different demographic groups, and that such effects may last over time. At the same time, reviews of the research show that turnout effects vary by study and by the details of the law (see Figure 2). This means an overall turnout figure can miss hardships faced by particular groups, in particular elections or under certain rules.

Taken together, the evidence gives substantial reason for concern about laws that demand strict photo identification while offering few practical ways around the requirement. Rare documented impersonation, combined with real barriers to obtaining ID, suggests that some rules may create costs out of proportion to their proven benefits.

The case against

The most important counterargument is that many rigorous studies have found little or no overall drop in turnout after voter-ID laws are adopted. A nationwide panel study by researchers Enrico Cantoni and Vincent Pons found no detectable aggregate turnout decline from strict ID laws and no clear difference by race, although its observational approach has been debated. 4

Other research reviews also report mixed findings. States do not adopt voter-ID laws at random, and changes in election rules often happen alongside other political and administrative shifts. That makes it difficult to isolate the precise effect of identification requirements.

It is also misleading to treat all voter-ID laws as the same. State systems range from strict photo-ID rules to non-photo requirements, sworn affidavits and provisional ballots. The MIT Election Lab notes that free IDs, matching rules for documents and fallback voting options can strongly shape how voters are affected. 5 A result from one strict state system cannot automatically be applied to every ID rule in the country.

There may also be a benefit that is harder to measure: public confidence. Some studies examine whether voter ID affects beliefs about fraud and the legitimacy of elections. But those studies measure perceptions and political divisions, not direct proof that ID laws stop substantial numbers of fraudulent votes. 6

The bottom line

The evidence supports the claim most clearly for strict photo-ID laws that are difficult to comply with and offer weak fallback options. In those cases, eligible voters may face unequal and meaningful barriers, while the fraud most directly targeted by ID checks is rarely documented.

But the evidence does not prove that every voter-ID law suppresses more legitimate votes than it prevents fraud. Average turnout often does not fall measurably, and state laws differ greatly in their design and accessibility.

There is no common, state-by-state measure that directly compares the number of eligible voters deterred by a particular rule with the number of impersonation attempts it prevents. Still, the available evidence strongly supports a conditional conclusion: poorly accessible, stringent ID systems are more likely to burden legitimate voters disproportionately than more flexible systems with free IDs and meaningful alternatives.