In the state of Iowa, you must be a registered voter before you can vote. You may:
Register to vote or update your voter registration online using your Iowa driver’s license or ID number. You will receive your voter registration card from your county auditor within two weeks.
The voter pre-registration deadline is 15 days before all elections. When you pre-register, your name will appear on the election register so that you will be able to sign in and vote quickly when you arrive at your polling place on Election Day.
You may register to vote on Election Day at the polling place for the precinct where you currently live. If you register to vote on Election Day, you will be required to show proof of residency and identity.