Overvote
Encyclopedia
An overvote occurs when one votes for more than the maximum number of selections allowed in a contest. The result is a spoilt vote
Spoilt vote
'Bold text'In voting, a ballot is considered to be spoilt, spoiled, void, null, informal or stray if it is regarded by the election authorities to be invalid and thus not included in the tally during vote counting. This may be done accidentally or deliberately...

 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
Robert's Rules of Order
Robert's Rules of Order is the short title of a book containing rules of order intended to be adopted as a parliamentary authority for use by a deliberative assembly written by Brig. Gen...

 notes that such votes are illegal: "If he votes for too many candidates for a given office, however, that particular section of the ballot is illegal, because it is not possible for the tellers to determine for whom the member desired to vote."

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.

While an overvote in a plurality voting system
Plurality voting system
The plurality voting system is a single-winner voting system often used to elect executive officers or to elect members of a legislative assembly which is based on single-member constituencies...

 is always illegal, in certain other electoral methods
Voting system
A voting system or electoral system is a method by which voters make a choice between options, often in an election or on a policy referendum....

 including approval voting
Approval voting
Approval voting is a single-winner voting system used for elections. Each voter may vote for as many of the candidates as the voter wishes. The winner is the candidate receiving the most votes. Each voter may vote for any combination of candidates and may give each candidate at most one vote.The...

, this style of voting is valid, and thus invalid overvotes are not possible.

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.

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The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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