WordNet
n. the age at which a person is old enough to vote in public elections
Wikipedia
A voting age is a minimum age established by law that a person must attain to be eligible to vote in a public election. Typically, the age is set at 18 years; however, ages as low as 16 and as high as 21 exist (see list below). Studies show that 21% of all 18 year olds have experience with voting.
Usage examples of "voting age".
For example you each represent about ten thousand human beings, perhaps seven thousand of voting age--and some of you were elected by slim majorities.
For example you each represent about ten thousand human beings, perhaps seven thousand of voting age—.
The voting age starts when a citizen is tall enough to pull the lever without being steadied by her nurse, and registrars are reluctant to disenfranchise a citizen short of a sworn cremation certificate.
Of 612 Neanderthals currently living on Earth, only 17 have yet attained voting age.