These voters pamphlets were distributed to primary election voters by the State of Oregon; there are generally separate primary election pamphlets for Republicans and Democrats, and sometimes for nonpartisan offices. These are distinct from the general election pamphlets which were distributed to all voters around the time of the general election.
Oregon Secretary of State, distributed to voters without a copyright notice
<a rel="nofollow" class="external free" href="https://digital.osl.state.or.us/islandora/object/osl%3Aor_voters_primary">https://digital.osl.state.or.us/islandora/object/osl%3Aor_voters_primary</a>