Oregon has a vote-by-mail system in all Oregon counties. Your ballot and election materials will arrive by mail. Ballots can be filled in and mailed back or delivered to four county drop sites by 8 p.m. on election day. Here’s a list of drop-box sites: official drop sites, or search the statewide Oregon directory at http://sos.oregon.gov/voting/Pages/drop-box-locator.aspx.