The Independent Party of Oregon's growth compares favorably to the two major political parties in Oregon. Its 50,000 members account for approximately 1/3rd of the voter registration growth in Oregon since January 2007. The party draws heavily from new registrants, but approximately 20 percent of its members were previously members of other political parties (mostly Republicans).
As the chart below shows, in the November 2008 general election, Independent Party of Oregon (IPO) members turned out to vote at a rate of 81.5%, more than 13% higher than the turnout for non-affiliated voters and considerably higher than the turnout of members of any other minor party.
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