Oregonians who do not mail their ballot by Friday should use a drop box to be certain it will be counted. Ballots must be received by county elections officials no later than 8 p.m. Tuesday, May 21. Postmarks do not count.
The location of drop boxes around Oregon is available online.
"I urge everyone to get their ballots in," said Secretary of State Kate Brown. "There are a lot of important local races and ballot measures to be decided."
Voters who have not received their ballot should call their county elections office.
Ballot measures to be decided in the May 21 election include proposals to ban retail single-use plastic bags in Newport, an $82 million school serial levy in Beaverton and a $18.3 million measure to fund 9-1-1 services in Deschutes County.
Contested school district races will be decided from Lake Oswego and Forest Grove to Medford, Bend and Lincoln County.
Contested special district races include the Corbett Fire District, the Bend Metro Park and Recreation District and the Port of Newport.
Contested community college board races range from Portland to Central Oregon to the Rogue Valley.