Is political polarization worse than it's been in the past?
I need more details from key reports.Yes, by multiple standard measures, political polarization in the United States is worse now than it has been in recent decades (roughly since the mid-to-late 20th century), though it is not unprecedented in the full sweep of American history.[1]
Polarization has two main forms: ideological (growing divergence in policy views and consistency of beliefs) and affective (emotional dislike or distrust of the opposing side). Both have intensified, especially since the 1990s–2000s, with a notable acceleration after around 2008 in some public opinion data. Congress shows even clearer long-term trends. Evidence comes primarily from Pew Research Center surveys, American National Election Studies (ANES) data, DW-NOMINATE congressional voting scores, and recent academic analyses.[2]
Ideological Polarization
Affective Polarization
Americans’ feelings toward the opposing party have grown much colder. ANES “feeling thermometer” data show out-party ratings declining substantially over decades (e.g., from near-neutral levels in earlier periods toward much lower scores by the 2010s–2020s), while in-party warmth stayed relatively stable or declined less. This gap has roughly doubled in some measures since the 1980s–1990s.[7][8]
Partisan gaps in presidential approval ratings are at or near historic highs (e.g., 70–80+ point differences in recent terms, far larger than for Eisenhower, Kennedy, or even Reagan). Views of the other party as a “threat to the nation’s well-being” have risen, and negative stereotypes (e.g., seeing opponents as immoral) have intensified. The U.S. has shown one of the largest increases in affective polarization among OECD countries over recent decades.[9][10]
Historical Context and Caveats
In short, data consistently show elevated ideological divergence, vanishing moderate overlap (especially in Congress), and heightened mutual dislike relative to the late 20th century. Whether this is “worse” depends on the baseline—yes versus recent history, more mixed versus the full American past—and on whether one prioritizes dysfunction/gridlock risks or views it as a byproduct of progress on rights and representation. Trends can reverse (as they have historically), and recent data sometimes show pauses or plateaus rather than endless escalation.
Citations (12)
- https://www.cnn.com/2026/07/05/politics/trump-july-4-america-250-civil-war-analysis
Backs: “I need more details from key reports.Yes, by multiple standard measures, political polarization in the United States is worse now than it has been in recent decades (roughly since the mid-to-late 20th century), though it is not unprecedented in”
evidence, article, neutral. Claim: Polarization is worse than recent decades by standard measures, though not unprecedented across American history (Civil War etc.).
- https://www.pewresearch.org/short-reads/2022/03/10/the-polarization-in-todays-congress-has-roots-that-go-back-decades/
Backs: “Evidence comes primarily from Pew Research Center surveys, American National Election Studies (ANES) data, DW-NOMINATE congressional voting”
evidence, article, points to yes. Claim: DW-NOMINATE shows Democrats and Republicans in Congress farther apart than in 50+ years, with roots in the 1970s.
- https://www.pewresearch.org/politics/2014/06/12/political-polarization-in-the-american-public/
Backs: “The ideological “center” shrank, and overlap between the parties diminished sharply: by the 2010s, ~92–94% of Republicans were to the right of the median Democrat (and vice versa), up from much higher overlap in the 1990s. Both sides moved outward, though tra”
statistic, official document, points to yes. Claim: Share of consistently ideological Americans roughly doubled from 10% in 1994 to 21%; party overlap shrank sharply.
- https://phys.org/news/2026-02-political-division-surged-onward.html
Backs: “Sorting (aligning self-identification more tightly with views) also increased. Polarization may have leveled so”
statistic, article, points to yes. Claim: 2026 Cambridge study found divisions on social and political issues rose 64% since 1988, mostly after 2008.
- https://www.cam.ac.uk/stories/political-division-united-states
Backs: “Polarization may have leveled somewhat recently but remains elevated.[[4]](https://phys.org/news/2026-02-p”
evidence, article, points to yes. Claim: Cambridge study of ANES data showing rising division, sorting, and asymmetric leftward shift.
- https://www.nature.com/articles/s41562-025-02251-0
Backs: “Other analyses confirm Democrats and Republicans have grown more distant on issues over the past 30 years, with parties moving away”
evidence, article, points to yes. Claim: Democrats and Republicans have grown more distant on issues over the past 30 years.
- https://goodauthority.org/news/americans-views-of-the-opposite-party-have-declined-even-further/
Backs: “ANES “feeling thermometer” data show out-party ratings declining substantially over decades (e.g., from near-neutral levels in earlier periods toward much lower scores by the 2010s–2020s), while in-party warmth stayed relatively stable or declined less. This gap has roughly doubled in”
evidence, article, points to yes. Claim: ANES feeling thermometer shows out-party ratings declining over decades, with the affective gap roughly doubling.
- https://link.springer.com/article/10.1007/s11109-022-09784-4
Backs: “This gap has roughly doubled in some measures since the 1980s–1990s.[[7]](https://goodauthority.org/news/americans-views-of-the-opposi”
evidence, article, points to yes. Claim: Affective polarization gap between in-party and out-party feelings has grown since the 1980s-1990s.
- https://www.newsweek.com/americans-used-to-like-presidents-from-other-party-what-happened-12307504
Backs: “The U.S. has shown one of the largest increases in affective polarization amon”
statistic, article, points to yes. Claim: Partisan gaps in presidential approval are at historic highs, far larger than for Eisenhower, Kennedy or Reagan.
- https://web.stanford.edu/~gentzkow/research/cross-polar.pdf
Backs: “The U.S. has shown one of the largest increases in affective polarization among OECD countries over recent decades.[[9]](https://www.newsweek.com/americans-used-to-like-presidents-fro”
evidence, official document, points to yes. Claim: US shows one of the largest increases in affective polarization among OECD countries.
- http://www.rochester.edu/college/faculty/alexander_lee/wp-content/uploads/2026/05/How_Polarization_Ends-12.pdf
Backs: “Polarization has historically risen and fallen with party systems.[[1]](https://www.cnn.com/2026/07/05/politics/trump-j”
evidence, official document, points to no. Claim: Past eras had deeper divides and polarization historically rises and falls with party systems.
- https://www.zmescience.com/science/news-science/us-political-polarization-exploded-since-2008-largely-due-to-a-shift-on-the-left/
Backs: “The even size of the two U.S. camps can make conflict feel especially intense compared to countries with unequal left/right distributions. Globally, clear”
evidence, article, neutral. Claim: Trends are asymmetric, with leftward movement on social issues, and rising polarization is not universal globally.