Scottsdale primary election: Candidate lineup and deadlines By Ben Lane, city clerk, 480-312-2411 April 18, 2024 With the candidate field set for Scottsdaleās July 30 primary election, voters should take note of important deadlines coming soon. The voter registration deadline for the primary election is July 1. Early voting begins July 3. The last day to request an early ballot is July 19. Early ballots should be mailed back no later than July 23; however, you may vote early in person through July