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GPT-5Oct 8, 2026openai/gpt-5-2025-08-07
Is political polarization worse than it's been in the past?
Short answer: Compared with most of the 20th century—especially the 1940s–1970s—polarization in the United States is higher today. But it isn’t unprecedented in all of U.S. history; the 1850s–1870s (slavery, Civil War, Reconstruction) were more polarizing by most historical standards.
What’s gotten “worse”
•Elite (Congress) polarization: The two parties are now ideologically sorted with almost no overlap; roll‑call measures show distances near or at modern-era highs.
•Affective polarization: Partisans like their own side more and increasingly dislike the other side; social distance and distrust across party lines have grown since the late 1970s.
•Geographic and institutional sorting: Fewer swing districts, less ticket‑splitting, more straight‑party voting, and state politics that mirror national party divides.
What hasn’t changed as much
•Average policy views in the mass public have not split into two non‑overlapping camps on every issue. Many Americans still hold a mix of left‑ and right‑leaning positions, but those positions now align more consistently with party identity, making compromise harder.
Historical context
•Very high: 1850s (sectional crisis) and the violent Reconstruction backlash.
•High: late 19th century machine‑party era.
•Low: mid‑20th century “anomalous” period of cross‑party coalitions (e.g., conservative Southern Democrats and liberal Republicans) that muted visible polarization.
•Rising again: post‑1960s realignment around race, religion, and region; reforms (primaries), nationalized media, donor incentives, and growing inequality reinforced today’s divide.
Bottom line
•If you compare today to mid‑century America, polarization is worse. If you compare to the broad sweep of U.S. history, today is very high but not uniquely so; the 1850s remain the clearest example of something worse. If you want, I can share charts that visualize these trends.