A provisional ballot is a fail-safe mechanism used primarily in United States elections to ensure that a voter whose eligibility is uncertain at the polling place can still cast a ballot, which is set aside and counted only after election officials verify the voter's eligibility.
The practice was made a nationwide requirement by the Help America Vote Act of 2002 (HAVA), enacted in response to the disputed 2000 presidential election. Section 302 of HAVA requires states to offer a provisional ballot to any voter who:
- claims to be registered and eligible but whose name does not appear on the official list of voters,
- is challenged by an election official as not eligible, or
- votes during extended polling hours pursuant to a court order.
After the polls close, local election officials review each provisional ballot envelope to determine whether the voter was in fact registered, voted in the correct jurisdiction, and met identification or signature requirements. If verified, the ballot is added to the count; if not, it is rejected, and HAVA requires that voters be given a free way (often a toll-free number or web portal) to learn whether their ballot was counted.
States vary significantly in how they treat provisional ballots. Some, like California, count provisional ballots cast in the wrong precinct for races the voter was eligible to vote in; others reject any ballot cast outside the assigned precinct entirely. North Dakota, which does not require voter registration, is exempt from the HAVA provisional-ballot mandate.
Provisional ballots can be decisive in close contests. They are typically tallied days or even weeks after Election Day, contributing to shifts in apparent margins during the canvass period. Rejection rates historically range from roughly 20% to 40% nationally, with the most common reasons being that the voter was not registered or voted in the wrong jurisdiction.
Comparable fail-safe procedures exist in other democracies under different names, such as the "tendered ballot" in the United Kingdom, though their legal effect and counting rules differ.
Example
In the 2020 U.S. general election, voters in Pennsylvania whose mail-in ballots had defects were directed to polling places to cast provisional ballots, which county boards then adjudicated during the post-election canvass.
Frequently asked questions
No. They are counted only if election officials confirm the voter was registered, eligible, and (in most states) voted in the correct precinct. Nationally, a substantial share are rejected each cycle.
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