The DEADLINE to pre-register to vote is October 9th. If you are turning in your registration in person, it must be in your county clerk's hands by 5:00 PM. If you are registering online, you have until 11:59 PM. If you are mailing in your form, it must be postmarked October 9th.
Recently, during the Idaho Legislative Special Session, a bill was passed that shortens the amount of time you can request an absentee ballot. The NEW deadline for requesting an absentee ballot is, we believe, October 4th, but are in the process of confirming that information.
If you'd like to vote in person still, but early to ensure you don't have to wait in long lines on election day, you have the option for early in-person voting, typically at your county clerk's office.