Cochise County leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 66% of adults in Cochise County typically vote, near the U.S. average of about 62%. Among adults in Cochise County, ~26% vote Democratic, ~40% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How Cochise County compares
Cochise County runs about 15 points more Republican than Arizona as a whole.
Politics vary noticeably by city within Cochise County. The southeast side runs the most Democratic (D+11) and the northeast side runs the most Republican (R+48), a spread of about 60 points.
Why Cochise County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Cochise County, not a ranked or complete list of what matters most.
Cochise County votes Republican even though it is densely developed (about 47%, modestly above the Arizona average of 39%). Here an older population outweighs the Democratic lean that density usually predicts.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; Cochise County, AZ sits in the bottom tenth nationally on this measure.
Why turnout in Cochise County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Cochise County is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Santa Cruz County, AZ D+17
- Pima County, AZ D+16
- Graham County, AZ R+39
- Hidalgo County, NM R+22
- Greenlee County, AZ R+45
- Grant County, NM D+6
- Pinal County, AZ R+16
- Luna County, NM R+19
- Gila County, AZ R+27
- Maricopa County, AZ D+3
Counties with Similar Populations
- Richland County, OH R+27
- Ascension Parish, LA R+32
- Gregg County, TX R+28
- Bonneville County, ID R+43
- Kennebec County, ME R+7
- Faulkner County, AR R+30
- Morgan County, AL R+43
- Saline County, AR R+41
- Chautauqua County, NY R+16
- Sebastian County, AR R+29
Sources and methodology
Precinct-level voting records used to fit the model come from Arizona Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.