Oregon's politics are largely divided by the
Cascade Mountains, with much of
western Oregon leaning Democratic and
eastern Oregon leaning Republican. The rapidly-growing area around Bend in Central Oregon has created Democratic voter registration majorities in Deschutes County. Republicans have some strongholds in the western part of the state outside of larger cities.
Linn County, between the liberal cities of Eugene and Salem, has voted for the Republican presidential candidate in every election since 1980.
Southern Oregon is also a Republican stronghold, except in
Jackson County, which frequently votes for both Republican and Democratic candidates. In the
1998 gubernatorial election, the only county won by Republican candidate
Bill Sizemore was
Malheur County. Because of the concentration of population in Portland and the Willamette Valley,
Gov. Kate Brown, a Democrat, won the
2018 election despite carrying only 7 of Oregon's 36 counties. Based on voting data from the
2012 presidential election,
Ontario in Malheur County was rated as the most Republican in the state.
Gresham in
Multnomah County was rated as the most Democratic. The last time a Democrat won every county in the state in a presidential election was in
1936, when
Franklin D. Roosevelt carried all counties. The last time a Republican accomplished this feat was in
1928, when every county was won by
Herbert Hoover. The last time a third-party candidate won any county was in
1912, when
Theodore Roosevelt carried Clatsop, Columbia, Jackson, and Washington counties on the Progressive ticket. Independent candidate
Ross Perot won 24.7% of the
1992 presidential vote in Oregon, but carried no counties.
Ideology Similar to the West Coast states of California and Washington, Oregon has a high percentage of people who identify as liberals. A 2013
Gallup poll that surveyed the political ideology of residents in every state found that people in Oregon identified as: • 34.8%
moderate • 33.6%
conservative • 27.9%
liberal A 2008 analysis by political statistician
Nate Silver on states' political ideology noted that the state's conservatives were the most conservative of any state (more so than Utah or Tennessee) and that the state's liberals were more liberal than any state (more so than Vermont or D.C.). == Political parties ==