casting vote

American  

noun

1. the deciding vote of the presiding officer of a deliberative body, made when the other votes are equally divided.

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casting vote British  

noun

1. the deciding vote used by the presiding officer of an assembly when votes cast on both sides are equal in number

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Etymology

Origin of casting vote

First recorded in 1685–95

Example Sentences

You probably haven’t cast the deciding vote in a significant election, but we bet you’ve worn an “I voted” sticker.

From Slate • May 15, 2026

The deciding vote in favour was made by Mr Whitfield, who did not express a "personal view" but said the committee would otherwise have been unable to reach a recommendation.

From BBC • May 28, 2024

Councilmember Andrew Lewis, who represents downtown, so hard hit by the problem, cast the deciding vote.

From Seattle Times • Jun. 9, 2023

Massie ended up being the deciding vote Tuesday in the Rules Committee to send the bill to the full House.

From Los Angeles Times • May 31, 2023

Rome would supply military forces, collect taxes, exploit resources, and have the deciding vote in any disputes.

From "Sterling Biographies®: Cleopatra: Egypt's Last and Greatest Queen" by Susan Blackaby