Overvote

Part of the Politics series
Voting
Balloting Ballots Absentee ballot Provisional ballot Sample ballot Candidates and Ballot measures Write-in candidate Electorate Slate Ticket Collection Ballot box Compulsory voting Early voting Electronic voting Open ballot Polling place Postal voting Precinct Vote center Voting booth Counting Popular vote Tally Voting machine
Electoral systems Plurality and majoritarian systems First-past-the-post voting Two-round system Instant-runoff voting Plurality-at-large voting General ticket Usual judgment Proportional and semi-proportional systems Single non-transferable vote Cumulative voting Binomial system Party-list Single transferable voting Spare vote Mixed-member systems Mixed-member proportional Additional member system Mixed single vote (positive vote transfer) Scorporo (negative vote transfer) Mixed ballot transferable vote Alternative Vote Plus Dual-member proportional Rural–urban proportional Majority bonus system Parallel voting (Mixed member majoritarian)
Voting strategies Issue voting Fusion voting Split-ticket voting Straight-ticket voting Tactical voting Vote pairing Protest votes Abstention Donkey vote Election boycott None of the above Refused ballot Spoilt vote
Voting patterns and effects Coattail effect Voting advice application Likely voter Paradox of voting Passive electioneering Vote splitting Political apathy Voter fatigue Voter turnout Protest votes
Electoral fraud and prevention Ballot harvesting Ballot stuffing Voter intimidation Vote buying Voter suppression Voter caging Prevention Election ink Secret ballot Voter registration End-to-end verifiable voting
Politics portal
v t e

An overvote occurs when one votes for more than the maximum number of selections allowed in a contest.^[1] The result is a spoiled vote which is not included in the final tally.

One example of an overvote would be voting for two candidates in a single race with the instruction "Vote for not more than one." Robert's Rules of Order notes that such votes are illegal.^[2]

Undervotes combined with overvotes (known as residual votes) can be an academic indicator in evaluating the accuracy of a voting system when recording voter intent.^[3]

While an overvote in a plurality voting system or limited voting is always illegal, in certain other electoral methods including approval voting, this style of voting is valid, and thus invalid overvotes are not possible.^[4]

In the corporate world, the term "overvote" describes a situation in which someone votes more proxies than they are authorized to, or for more shares than they hold of record.^[5]