Oregon’s Fastest Growing Voter Counties 1986-2010

These are the fastest growing counties in gubernatorial voters between 1986 and 2010. Counties that trended Republican are in red and those that trended Democratic are in blue.. Washington County was the biggest Republican county in 1986. It has trended Democratic. This is a key demographic factor in how Oregon political developments have gone against the Republicans the past 24 years

Source of data: Oregon Secretary of State

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