Partisan Voting Index for Counties in Montana

This Map Displays the Partisan Voting Index Value for each county in Montana. 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 2024 and 2020 presidential election. Of the 56 Counties in Montana The County with the highest Republican PVI is Garfield County at +46. The County with the highest Democrat PVI is Glacier County at +11.

Map List Related

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

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

List of All Counties in Montana With Partisan Voting Index (2024 Presidential Election Results)

Map KeyNamePartisan Voting Index (2024)
Beaverhead CountyRepublican +21
Big Horn CountyRepublican +1
Blaine CountyRepublican +1
Broadwater CountyRepublican +30
Carbon CountyRepublican +16
Carter CountyRepublican +41
Cascade CountyRepublican +11
Chouteau CountyRepublican +16
Custer CountyRepublican +24
Daniels CountyRepublican +32
Dawson CountyRepublican +30
Deer Lodge CountyDemocrat +1
Fallon CountyRepublican +39
Fergus CountyRepublican +26
Flathead CountyRepublican +16
Gallatin CountyDemocrat +1
Garfield CountyRepublican +46
Glacier CountyDemocrat +11
Golden Valley CountyRepublican +36
Granite CountyRepublican +21
Hill CountyRepublican +8
Jefferson CountyRepublican +18
Judith Basin CountyRepublican +29
Lake CountyRepublican +9
Lewis and Clark CountyRepublican +3
Liberty CountyRepublican +28
Lincoln CountyRepublican +26
Madison CountyRepublican +22
Mccone CountyRepublican +37
Meagher CountyRepublican +27
Mineral CountyRepublican +24
Missoula CountyDemocrat +10
Musselshell CountyRepublican +36
Park CountyRepublican +4
Petroleum CountyRepublican +38
Phillips CountyRepublican +32
Pondera CountyRepublican +20
Powder River CountyRepublican +38
Powell CountyRepublican +26
Prairie CountyRepublican +32
Ravalli CountyRepublican +20
Richland CountyRepublican +34
Roosevelt CountyRepublican +3
Rosebud CountyRepublican +18
Sanders CountyRepublican +27
Sheridan CountyRepublican +21
Silver Bow CountyDemocrat +4
Stillwater CountyRepublican +30
Sweet Grass CountyRepublican +27
Teton CountyRepublican +23
Toole CountyRepublican +28
Treasure CountyRepublican +34
Valley CountyRepublican +25
Wheatland CountyRepublican +29
Wibaux CountyRepublican +37
Yellowstone CountyRepublican +13

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