Circles show precinct results for the 2008 presidential election. Size of the circles represent the number of votes for McCain (red) or Obama (blue). Precincts highlighted in white were narrow victories for the indicated candidate (less than 55% of the two-way vote). Tap on circles for details.
Source: Spatial Social Science Lab, Stanford University. Data for Oregon were unavailable.

Voting patterns are affected by many factors, individual judgment chief among them. Income and ethnicity are two of many phenomena that specialists use to forecast potential election results. Compare with: