Here's how the Oregon mail in ballots are handled.
Vote by mail (VBM) packets are mailed to all eligible voters. Each packet contains a secrecy envelope, ballot return envelope and ballot. Ballots cannot be forwarded. Those ballots that are undeliverable are returned to the county election office. Any time after the ballots are mailed, if a registered voter has not received a ballot, the voter may call the county election office and request a replacement ballot. If the voter is qualified, the ballot will immediately be mailed.
Each ballot is checked upon return to its respective county election office. •Outer envelope signatures are verified using an electronic signature on computer, or by com- paring each signature by hand to the most current registration on file. •Voter signatures are verified on each return envelope. If a signature cannot be verified, the ballot is set aside for further investigation. If the envelope is not signed, an effort is made to contact the voter. •Once verified, the ballots are sorted by precinct. All outer envelopes are kept sealed until the Thursday before the election.
The county election boards begin opening the outer envelopes, one precinct at a time. • The secrecy envelope is separated from the outer envelope. • Outer envelopes are retained by precinct and serve as the “poll book.” • The secrecy envelope is opened. Election boards unfold and straighten the ballots. • Each ballot is pre-inspected to check for irregularities and prepared for the tallying process. Ballots are held for counting until election day