a close-run thing
idiomPart ofclose
a close-run thing — idiom
1. A competition or election that is won or lost by a very small margin.
1.idiom
Definition
A competition or election that is won or lost by a very small margin.
Example
The election was a close-run thing, decided by only 100 votes.
The match was a close-run thing, with the winner scoring in the last minute.