Same-Day Registration

Same-Day Registration (SDR), sometimes called Election Day Registration (EDR), permits otherwise-eligible citizens to complete voter registration and vote in a single visit to a polling place or election office, rather than registering weeks in advance. Voters typically must show proof of identity and residency, such as a driver's license, utility bill, or other documentation specified by state law.

SDR is most associated with the United States, where voter registration deadlines have historically been a barrier to turnout. Maine, Minnesota, and Wisconsin were early adopters in the 1970s. Since then, roughly 20 U.S. states plus the District of Columbia have enacted some form of SDR, though specific procedures and ID requirements vary substantially. North Dakota is a separate case because it does not require voter registration at all.

Research on SDR—including work by political scientists such as Craig Leonard Brians, Bernard Grofman, and the Brennan Center for Justice—generally finds that the policy increases turnout by several percentage points, with the largest effects among young voters, renters, and people who have recently moved. Critics argue SDR can strain poll-worker capacity and complicate fraud prevention, though documented cases of in-person registration fraud are rare.

SDR is often discussed alongside related reforms:

• Automatic Voter Registration (AVR): registration triggered by interaction with a government agency, typically a motor vehicle department.
• Online Voter Registration: electronic submission of registration forms.
• Pre-registration: allowing 16- or 17-year-olds to register before turning 18.

Outside the U.S., many democracies render the issue moot through state-managed voter rolls or civil registries that automatically enroll eligible citizens, as in Germany, Sweden, and most Latin American countries. The policy debate over SDR therefore tends to be a distinctly American one, tied to the country's decentralized, opt-in registration system established largely after the National Voter Registration Act of 1993 ("Motor Voter").