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running mate

American  

noun

  1. a candidate for an office linked with another and more important office, as for the vice-presidency.

  2. a horse entered in a race in which another, more important, horse from the same stable, or belonging to the same owner, is run.

  3. a close companion.


running mate British  

noun

  1. a candidate for the subordinate of two linked positions, esp a candidate for the vice-presidency

  2. a horse that pairs another in a team

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of running mate

An Americanism dating back to 1865–70

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The lawyer said 17 others, including Mundubile's running mate Makebi Zulu, had also been charged with treason.

From BBC Aug. 30, 2026

Mark Moran, a former investment banker, said he got the early inside track on who Trump would choose as his running mate over dinner at L’Annexe, a swanky Georgetown cocktail bar.

From The Wall Street Journal Jul. 18, 2026

Doncic needs his running mate to compensate for his questionable defensive skills, and Reaves has yet to do that.

From Los Angeles Times Jun. 24, 2026

Kennedy’s running mate, Nicole Shanahan, had made a stop at Raw Farm during his presidential campaign, creating multiple videos featuring McAfee.

From Salon Jun. 22, 2026

Caroline is already bugging me to be her running mate when she goes for eighth-grade president next year.

From "Linked" by Gordon Korman

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