Noun
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: WordNetphoto-finish
Amongst other things, absentee and early voting pushed W. just a nose ahead of Kerry in another photo finish, this time in Ohio. Source: Internet
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. Source: Internet
The all important photo finish at the Booleroo Centre Sheep Races. Source: Internet