Is political polarization worse than it's been in the past?

Is Political Polarization Worse Than in the Past?

The honest answer is: it depends on what you're measuring—and by several key metrics, yes, it's at or near historic highs, though the U.S. has survived worse periods overall.

Elite/Congressional Polarization: Yes, Historically High

By the most rigorous political science measures, congressional polarization is genuinely unprecedented in the modern era. A Pew Research Center analysis finds that, on average, Democrats and Republicans are farther apart ideologically today than at any time in the past 50 years. The ideological overlap between parties that used to exist has vanished: five decades ago, 144 House Republicans were less conservative than the most conservative Democrat, and 52 House Democrats were less liberal than the most liberal Republican. Today, both parties have grown more ideologically cohesive, with now only about two dozen moderate Democrats and Republicans left on Capitol Hill, versus more than 160 in 1971-72.

Some researchers extend this further back, noting ideological distance between the parties began to grow during the 1970s to the extent that Congress is now more polarized than at any time since the late 1870s Reconstruction Era.

Public/Partisan Animosity: Also Rising Sharply

Beyond policy positions, Americans' feelings toward the opposing party have intensified. Republicans and Democrats are more divided along ideological lines – and partisan antipathy is deeper and more extensive – than at any point in recent history. This isn't just disliking the other side—the growing contempt many Republicans and Democrats have for the opposing party is broader and deeper than in the recent past, even though disliking the other party isn't new.

Recent data reinforces this: one analysis notes an 80-point partisan gap in Trump approval, the highest recorded in modern polling era, compared to 70 points for Obama and 60 points for Clinton, and that 63% of Americans see the opposing party as a "threat to democracy," with affective polarization roughly doubling since 1994.

Geographic and social sorting has compounded this: the share of Americans in "landslide counties" grew from 39% in 1992 to 57% in 2024, limiting cross-partisan exposure.

But Historically? The U.S. Has Seen Far Worse

Context matters enormously here. Political scientists caution that there have been long stretches of American history in which ruptures in society were far worse than they are now—including epic struggles waged between advocates of slavery and abolitionists, agrarian populists and urban manufacturing interests at the end of the nineteenth century, and industrial workers and owners of capital well into the first third of the twentieth century.

A vivid reminder: the Brooks-Sumner Affair, in which abolitionist Senator Charles Sumner was beaten nearly to death by one of his colleagues, remains one of the most visceral moments of polarization in American history. By that standard, today's tensions—while real—haven't produced comparable political violence at the elite level.

An Important Nuance: Policy Distance vs. Political Behavior

Some researchers push back on the "worst ever" narrative for a subtler reason. Political scientist Frances Lee argues while some measurements suggest more division, what they actually show is simply that the voting behavior of politicians has become more predictable—that doesn't mean politicians are farther apart on policy issues than in the past. She points out changes in the scope of policy issues over time are often missed—even though measurements show increasing party division over civil rights issues, many of today's votes are narrower in effect than 1960s civil rights legislation.

Interestingly, actual policy attitudes among ordinary Americans may be less divided than the rhetoric suggests. One recent analysis notes issue polarization tells a different story—79% support Medicare drug negotiation, 76% support pre-existing conditions protections, and 70% support marijuana decriminalization, all across party lines.

Perceptions of Polarization Are Also Rising

Beyond the data, people increasingly feel divided. A December 2025 survey found 89% of local officials say polarization is negatively affecting the United States, the highest figure since data collection began in August 2024. Notably though, only 30% of the same officials say polarization is hurting their local community, unchanged over the past year—suggesting community life remains resilient despite national strife.

Bottom Line

So it's less "polarization is unprecedented in human/national history" and more "the specific mechanisms we use to measure elite and partisan division show record highs in the post-WWII data record"—a real and consequential trend, even if it doesn't rival the nation's most violent historical divisions.