Putting Within-Country Political Differences in (Global) Perspective.

The current political discourse in the United States focuses on extreme political polarization as a contributor to ills ranging from government shutdowns to awkward family holidays. And indeed, a large body of research has documented differences between liberals and conservatives-primarily focused on Republicans and Democrats in the United States. We combine large international surveys and more fine-grained surveys of United States citizens to compare differences in opinion between Republicans and Democrats to the full range of world opinion on moral issues (N = 37,653 in 39 countries) and issues of free speech (N = 40,786 in 38 countries). When viewed in the full distribution, polarization between Democrats and Republicans appears relatively small, even on divisive issues such as abortion, sexual preference, and freedom of religious speech. The average Democrat-Republic overlap is greater than 70% of the country pair overlaps across eight moral issues, meaning that 70% of the country pairs are more dissimilar from each other than Democrats and Republicans are dissimilar; similarly, the average Democrat-Republic overlap is greater than 79% of the country pair overlaps across five freedom of speech issues. These results suggest that cross-cultural comparisons are useful for putting differences between political partisans within the same country in context.