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Elections and Voting - 2021 Election Guide

Cook County Vote By Mail

Any registered suburban Cook County voter may request a mail ballot using an online application.

Once we verify your registration and process your application, we will send a paper ballot to the mailing address you designate in your application. The deadline to apply is five days before an election.  April 1, 2021 is the last day to request a mail ballot


Apply as early as possible to make sure you receive your ballot in time to vote. Your ballot must be postmarked no later than Election Day and received at the Cook County Clerk's office within 14 days after Election Day.

To complete an online mail ballot application you will need:

  • Your driver's license or state ID number OR the last 4 digits of your Social Security Number
  • Address where you would like your ballot mailed
  • Email address

Mail Ballot Online Application