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

To answer whether political polarization is worse today than in the past, it helps to look at history. The short answer is yes and no: it depends entirely on which past you are comparing it to, and what kind of polarization you are measuring.

If we compare today to the mid-20th century, polarization is indeed vastly worse. However, if we compare today to the broader sweep of American history—such as the Founding Era, the Civil War, or the Gilded Age—today’s divisions, while dangerous and highly visible, are not historically unprecedented.

1. The Post-War "Anomaly" (Why Today Feels So Polarized)

To understand why the political climate feels so exceptionally fractured today, it is important to look at the era immediately following World War II (roughly the 1950s through the 1970s).

During this post-war period, American political parties were not ideologically sorted. The Democratic Party was a strange coalition of northern liberals and deeply conservative southern segregationists. Meanwhile, the Republican Party had a strong wing of moderate-to-liberal northeasterners alongside western conservatives.

Because both parties contained widely diverse views, they frequently overlapped. In fact, in the 1950s, political scientists actually complained that the two parties were too similar and did not offer voters a clear ideological choice.

Because the baby boomer generation and Gen X grew up during this period of high bipartisan consensus, it became the benchmark for what "normal" politics should look like. Compared to that era, modern polarization has indeed skyrocketed. But historically speaking, that post-war era of consensus was the exception, not the rule.

2. Historical Peaks of Polarization

Throughout its history, the United States has experienced periods of division that equaled or far exceeded the political hostility of the 21st century:

3. What Is Uniquely Worse About Today’s Polarization?

While we are not in a civil war, political scientists point out several features of modern polarization that are uniquely dangerous and distinct from the past:

A. "Affective" Polarization (Animosity over Policy)

Scholars distinguish between ideological polarization (disagreeing on policy) and affective polarization (disliking and distrusting the other side).

Interestingly, data shows that the average American’s policy views (on economy, healthcare, etc.) are actually relatively moderate. However, affective polarization has surged. Voters do not just disagree with the opposing party; they increasingly view them as immoral, dishonest, and a literal threat to the nation. According to Pew Research, the share of Democrats and Republicans who view the other party as "immoral" has doubled over the last decade. We have moved from "I disagree with your tax policy" to "I believe you want to destroy America."

B. The Rise of "Mega-Identities"

In the past, political parties were cross-cutting. A voter might be a conservative, a union member, a churchgoer, and a Democrat all at once. Because people belonged to multiple social groups that didn’t perfectly align with one political party, it forced a level of social cohesion.

Today, those identities have completely sorted themselves. Our political party now aligns perfectly with our geography (urban vs. rural), our education level, our race, our religion, and our cultural tastes. Political scientist Liliana Mason refers to this as a "mega-identity." Because politics is now tied to our core sense of self, any political compromise feels like a betrayal of who we are.

C. The Digital Information Ecosystem

In the 19th century, newspapers were fiercely partisan. However, they were local and decentralized. Today’s information ecosystem is entirely different:

Summary

If the question is, "Is this the most divided the country has ever been?" the answer is no. The United States has survived a physical civil war, political assassinations, and periods of deep systemic violence.

However, if the question is, "Is political polarization worse than it has been in living memory?" the answer is yes. The combination of complete party sorting (mega-identities), high affective animosity, and a highly sophisticated digital outrage machine has created a unique brand of polarization. It is a quiet, cold conflict—one that may not feature armies on a battlefield, but deeply strains the social fabric and the day-to-day functioning of democratic institutions.