Tacna is a Republican stronghold. About 24% of voters here vote Democratic and 76% Republican.
About 45% of adults in Tacna typically vote, below the U.S. average of about 62%. Among adults in Tacna, ~11% vote Democratic, ~34% Republican, and ~55% don't vote. The map below shows estimated turnout by block group.
How Tacna compares
Among cities within 25 miles, Tacna is the most Republican-leaning.
Tacna runs about 46 points more Republican than Arizona as a whole.
Why Tacna leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Tacna, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 4% of residents in Tacna live in densely developed areas, about 35 points below the Arizona average of 39%. Low college attainment predicts Republican voting, and Tacna sits in the bottom quarter (about 12%, below 87% of cities).
Population density and Republican lean
Places with low population density tend to lean Republican; Tacna, AZ sits in the bottom quarter nationally on this measure.
Why turnout in Tacna looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Tacna is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 45%, about 9 points below the Arizona average of 54%. Renters vote less often than owners, and about 34% of households in Tacna rent, above 89% of cities. High food insecurity lines up with lower turnout, and about 30% of adults in Tacna report food insecurity, above 96% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Roll, AZ R+51
- Sentinel, AZ R+50
- Wellton, AZ R+36
- Ligurta, AZ R+42
- Dome, AZ R+41
- Fortuna Foothills, AZ R+32
- Laguna, AZ R+46
- Dateland, AZ R+37
- Fishers Landing, AZ R+46
- Bard, CA D+27
Cities with Similar Populations
- Oral Lake, WV R+57
- Phillipston, MA R+15
- Mineral Springs, PA R+60
- Piper, PA R+63
- Vincent, IA R+43
- Stoneville, WV R+73
- Long Branch, PA R+38
- West Bethel, ME Even
- Exline, IA R+57
- Hamilton Crossroads, AL R+53
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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.