enfranchise

transitive verb | \ in-ˈfran-ˌchīz \ | en·fran·chise
  1. : to grant franchise to; especially : to admit to the privileges of a citizen and especially to voting rights the Twenty-sixth Amendment enfranchised all citizens over 18 years of age — compare emancipate : to admit to the privileges of a citizen and especially to voting rights the Twenty-sixth Amendment enfranchised all citizens over 18 years of age — compare emancipate