If it is reasonably available to the State or political subdivision involved, an estimate of the population of the area which consists of citizens of the United States who are 18 years of age or older, broken down by demographic group. (C) The number of registered voters, broken down by demographic group if such breakdown is reasonably available to the State or political subdivision involved. (D) (i) If the change applies to a State, the actual number of votes, or (if it is not reasonably practicable for the State to ascertain the actual number of votes) the estimated number of votes received by each candidate in each statewide election held during the 5-year period which ends on the date the change involved is made