Pecatonica leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 88% of adults in Pecatonica typically vote, above the U.S. average of about 62%. Among adults in Pecatonica, ~29% vote Democratic, ~59% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How Pecatonica compares
Among cities within 25 miles, Pecatonica leans more Republican than 28 of 68 neighbors.
Pecatonica runs about 45 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Pecatonica is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Pecatonica. The south side is the most Republican-leaning (R+43) and the west side is the least Republican-leaning (R+28), a spread of about 15 points.
Why Pecatonica 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 Pecatonica, not a ranked or complete list of what matters most.
Pecatonica votes against the grain of Illinois. Illinois leans Democratic overall, while Pecatonica runs about 45 points more Republican.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Pecatonica, IL does.
Why turnout in Pecatonica looks the way it does
Turnout in Pecatonica sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Seward, IL R+46
- Winnebago, IL R+32
- Ridott, IL R+44
- Durand, IL R+35
- Egan, IL R+41
- German Valley, IL R+45
- Winneshiek, IL R+43
- Davis, IL R+29
- Rock City, IL R+42
- Myrtle, IL R+35
Cities with Similar Populations
- Noel, MO R+52
- Dodge Center, MN R+36
- Newtown, OH R+10
- Brown City, MI R+50
- South Rockwood, MI R+34
- Seagraves, TX R+56
- Twin City, GA R+36
- Red Rock, TX R+47
- Shannon, MS R+14
- Sneedville, TN R+77
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Illinois State Board 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.