Simple Definition of running mate
: the person who runs with someone in an election (such as an election to choose a new president) and who is given the less important position (such as vice president) if they are elected
Full Definition of running mate
1 : companion
2 : a horse entered in a race to set the pace for a horse of the same owner or stable
3 : a candidate running for a subordinate place on a ticket; especially : the candidate for vice-president
Examples of running mate in a sentence
When John F. Kennedy ran for president, his running mate was Lyndon Johnson.
<inseparable running mates who first met when they were in elementary school>
First Known Use of running mate
Learn More about running mate
Thesaurus: All synonyms and antonyms for running mate
Seen and Heard
What made you want to look up running mate? Please tell us where you read or heard it (including the quote, if possible).