2008 Oregon Republican presidential primary
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| Elections in Oregon | 
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The 2008 Oregon Republican presidential primary was a mail only primary in the U.S. state of Oregon. Ballots were mailed to registered Republican voters between May 2 and May 6, 2008. To be counted, all ballots must have been received by county elections offices by 8:00 p.m. PDT on May 20, 2008. It was a closed primary; in order to vote in Republican races, residents must have registered as Republicans on or before April 29, 2008.