Idaho State Statutes - Idaho Attorney Directory

Upon
receipt of the absent elector's ballot the elector shall thereupon mark and
fold the ballot so as to conceal the marking, deposit it in the ballot
envelope and seal the envelope securely. In the event an election requires a
perforated ballot, the unvoted portion must be deposited in the unvoted ballot
envelope and sealed. The ballot envelopes must then be deposited in the return
envelope and sealed securely.
The elector shall then execute an affidavit on the back of the return
envelope in the form prescribed, provided however, that such affidavit need
not be notarized.

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