Partisan Voting Index for Counties in Oregon

This Map Displays the Partisan Voting Index Value for each county in Oregon. The Partisan Voting Index (PVI) is a measurement of how strongly a county leans toward the Democratic or Republican Party. The PVI is calculated by taking the average percentage for the winning party in a county for the last two elections and subtracting that value from the national average for that party in the same two elections. The data is based on results from the 2020 and 2016 presidential election. Of the 36 Counties in Oregon The County with the highest Republican PVI is Lake County at +28. The County with the highest Democrat PVI is Multnomah County at +30.

Map List Related

Map of Partisan Voting Index (PVI) for Counties in Oregon

Rep +20
Rep. 15-19
Rep. 10-14
Rep. 5-9
Rep. 1-4
Dem 1-4
Dem 5-9
Dem 10-14
Dem 15-19
Dem +20

List of All Counties in Oregon With Partisan Voting Index (2020 Presidential Election Results)

Map KeyNamePartisan Voting Index (2020)
Baker CountyRepublican +23
Benton CountyDemocrat +17
Clackamas CountyDemocrat +4
Clatsop CountyDemocrat +4
Columbia CountyRepublican +2
Coos CountyRepublican +8
Crook CountyRepublican +22
Curry CountyRepublican +7
Deschutes CountyDemocrat +1
Douglas CountyRepublican +16
Gilliam CountyRepublican +19
Grant CountyRepublican +26
Harney CountyRepublican +26
Hood River CountyDemocrat +17
Jackson CountyEven +0
Jefferson CountyRepublican +9
Josephine CountyRepublican +11
Klamath CountyRepublican +18
Lake CountyRepublican +28
Lane CountyDemocrat +10
Lincoln CountyDemocrat +7
Linn CountyRepublican +9
Malheur CountyRepublican +19
Marion CountyDemocrat +1
Morrow CountyRepublican +18
Multnomah CountyDemocrat +30
Polk CountyRepublican +2
Sherman CountyRepublican +24
Tillamook CountyRepublican +1
Umatilla CountyRepublican +13
Union CountyRepublican +17
Wallowa CountyRepublican +16
Wasco CountyEven +0
Washington CountyDemocrat +15
Wheeler CountyRepublican +23
Yamhill CountyRepublican +1