OREGON DEMOCRATIC ADVANTAGE AND INDEPENDENT PERCENTAGE, 1964-2008

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The blue line is the Democratic registration advantage among voters since 1964 (= % of actual voters who are Democrats minus % of actual voters who are Republicans).

The green line is the Independent percentage of actual voters.

Note two trends:

The Independent percentage, as a share of voters, has generally increased since 1970.
The Democratic advantage generally decreased until 2006.

Note two observations:

2002 was the best Republican turnout year since 1964.
The Democrats enjoyed a sharp spike among voters in 2008.

Source of data: Oregon Secretary of State.

OREGON DEMOCRATIC ADVANTAGE AND INDEPENDENT PERCENTAGE, 1964-2008

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