Unless your state or local election official provides a prepaid return envelope with your ballot, Americans have to ensure that the appropriate postage is paid. However, there are 17 states that have statutes requiring local election officials to provide return postage for mail-in ballots. Find out if your state provides prepaid postage for mail-in ballots on your Secretary of State’s website.

If you need to purchase stamps, you can pick them up at your local post office or buy them online. Also, many grocery stores and pharmacies also sell them at the cash register in most cases, it is up to the voter to pay for postage to return a mail ballot envelope to the election official.