Portales leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 61% of adults in Portales typically vote, near the U.S. average of about 62%. Among adults in Portales, ~21% vote Democratic, ~40% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How Portales compares
Among cities within 25 miles, Portales leans more Republican than 1 of 15 neighbors.
Portales runs about 38 points more Republican than New Mexico as a whole. New Mexico leans Democratic overall, while Portales is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Portales. The southeast side is the most Republican-leaning (R+51) and the north side is the least Republican-leaning (R+18), a spread of about 33 points.
Why Portales 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 Portales, not a ranked or complete list of what matters most.
Portales votes Republican even though it is densely developed (about 56%, far above the New Mexico average of 18%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Portales runs against the grain of New Mexico, a Republican-leaning pocket in a Democratic-leaning state.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; Portales, NM sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Portales looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Portales is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 44% of households in Portales rent, compared to around 24% in nearby cities. High food insecurity lines up with lower turnout, and about 22% of adults in Portales report food insecurity, above 85% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Floyd, NM R+75
- Cannon Air Force Base, NM R+55
- Grier, NM R+73
- Dora, NM R+77
- Clovis, NM R+31
- Rogers, NM R+77
- St. Vrain, NM R+74
- Texico, NM R+59
- Ranchvale, NM R+81
- Hollene, NM R+81
Cities with Similar Populations
- Highland, MI R+26
- Ferndale, MD D+10
- Centerville, UT R+21
- Massapequa Park, NY R+35
- Jackson, WY D+18
- Bridgeview, IL R+11
- Vincentown, NJ R+25
- Abington, MA Even
- Bothell West, WA D+23
- Russellville, AL R+52
Sources and methodology
Precinct-level voting records used to fit the model come from New Mexico Secretary of State, Bureau of 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.