The City Clerk's Office would be happy to mail any City of El Monte resident a Voter Registration Form. Please call us at (626) 580-2016 for information. You must file a new Voter Registration Form each time you move or if you have never registered before. You must be registered to vote at least 15 days prior to the election in which you intend to vote. If you do not live in Los Angeles County, please contact the county Registrar of Voters in the county that you reside.