Nearly half of U.S. states and Washington, D.C., allow voters to register and cast ballots on Election Day. Vote.gov provides state-specific instructions on how and where to register and what kind of identification is needed. Voters can also check their registration status there.
Most states allow same-day voter registration at all polling places. Voters in Connecticut, Illinois and Rhode Island must register at locations designated by a town or another election authority. Michigan requires voters to register at a city or township clerk’s office, and voters in Montana need to head to a county election office.
In Alaska and Rhode Island, same-day registration is restricted to presidential and vice-presidential contests.
Here’s a full list of the places that allow voters to register on Election Day:
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Alaska
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California
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Colorado
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Connecticut
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Hawaii
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Idaho
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Illinois
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Iowa
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Maine
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Maryland
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Michigan
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Minnesota
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Montana
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Nevada
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New Hampshire
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New Mexico
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Rhode Island
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Utah
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Vermont
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Virginia
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Washington State
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Washington, D.C.
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Wisconsin
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Wyoming