photo finish
Noun
Meaning
in general, any very close finish; in particular, a finish of a race in which the contestants are so close together that the winner must be determined from a photograph taken at the instant of finishing
Source: WordNetAlternative names
photo-finish
Synonyms
Antonyms
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Examples
Amongst other things, absentee and early voting pushed W. just a nose ahead of Kerry in another photo finish, this time in Ohio.
Republicans have long argued that Saccone was a flop of a candidate, and they’re right, but that only partly explains of the election’s photo finish.
The all important photo finish at the Booleroo Centre Sheep Races.