Last day to register for Kingfisher sales tax vote is April 16, election board says April 07, 2021 - 00:00 Posted in: News The last day for Kingfisher city residents to register to vote in the special May 11 sales tax election is Friday, April 16. Kingfisher County Election Board Secretary Shawna Butts said anyone who is a U.S. citizen age 18 or older can register to vote. However, only registered voters who reside within ...PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today!