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

Whether political polarization is "worse" than in the past depends on which era of history you use as a benchmark.

If you compare today to the mid-to-late 20th century, the answer is a resounding yes. However, if you look further back into the arc of American history, the country has survived several eras of equal or even greater division.

1. Yes, It is Worse Than in Recent Memory

For anyone who lived through the mid-20th century, the current political climate feels uniquely fractured—and data supports this.

•The Disappearance of the Center: From the 1950s through the 1970s, political parties were "un-sorted." You could easily find conservative Southern Democrats and liberal Northeastern Republicans. Because of this overlap, bipartisanship was common. According to the Pew Research Center, in the early 1970s, there were over 160 moderate Democrats and Republicans in Congress. By the 2020s, that number had dwindled to just a couple of dozen.

•Ideological Divergence: Congress is more ideologically divided today than at any point in the last 50 years. According to DW-NOMINATE (a system political scientists use to map congressional voting records), the average Republican has shifted significantly to the right, and the average Democrat has shifted to the left, leaving a massive ideological gulf in the middle.

•The 2008 Turning Point: A Cambridge University study tracking American public opinion from the Reagan era to the mid-2020s found that public polarization on social and political issues was relatively flat during the 1990s and early 2000s. However, beginning in 2008—fueled by the financial crisis, the election of Barack Obama, and the rise of smartphones—ideological division surged by 64%.

2. No, It Is Not Worse Than America's Historic Highs

While today's polarization is unprecedented in modern times, American history is defined by cyclical waves of intense division. Several past eras match or exceed today's acrimony:

•The Civil War Era (1850s–1860s): This remains the ultimate benchmark of American polarization. The issue of slavery created a division so deep, geographic, and moral that it shattered the political system entirely. It resulted in secession and a war that claimed hundreds of thousands of American lives. Modern polarization has not resulted in a literal split of the union or large-scale military conflict.

•The Reconstruction and Gilded Age (1870s–1890s): Following the Civil War, congressional polarization was just as high as it is today. Politics were incredibly bitter, and elections were treated as existential battles. The parties weaponized procedural rules, and Republicans regularly "waved the bloody shirt" to remind voters that Democrats had been the party of secession.

•The Founding Era (1790s): The decade immediately following the adoption of the Constitution was filled with venom. The Federalists and Democratic-Republicans viewed each other as literal traitors. Physical brawls broke out on the floor of Congress, the ruling party passed the Alien and Sedition Acts to jail political opponents and journalists, and prominent leaders (most famously Alexander Hamilton and Aaron Burr) settled their differences with deadly duels.

3. What Makes Today's Polarization Different?

While we are not in a civil war, political scientists warn that modern polarization has unique, highly volatile characteristics that make it uniquely difficult to resolve:

•Affective Polarization: In the past, people disagreed on policies. Today, polarization is increasingly "affective," meaning voters do not just disagree with the opposing party—they actively dislike, distrust, and fear them. Pew Research found that the percentage of Democrats and Republicans who view the opposing party as "immoral" almost doubled between 2016 and 2022.

•Total Cultural "Sorting": Historically, a person’s political party didn’t dictate their entire identity. Today, political affiliation has become a "mega-identity" linked to race, religion, geography, consumer habits, and cultural values. If you know where someone lives and what they do for a living, you can predict their political party with high accuracy.

•The Digital Information Loop: Unlike the partisan newspapers of the 19th century, modern social media and news algorithms are designed to maximize engagement by feeding users content that triggers outrage and fear. This creates highly insulated "echo chambers" where it is easy to assume the worst about the other side.

•American Exceptionalism: While polarization is a global trend, it is happening much faster in the United States than in other Western democracies. A study by Brown and Stanford economists found that affective polarization has grown rapidly in the U.S. over the last 40 years, while it actually decreased in countries like the UK, Germany, and Sweden.

Summary

Ultimately, political polarization today is worse than it has been in roughly 130 years. While the nation is not currently facing the physical fracture of the 1860s, the psychological and cultural divide between Americans has rarely been wider or more deeply rooted.

Citations (12)

1brown.eduAcademic
brown.edu
Backs: “If you compare today to the mid-to-late 20th century, the answer is a resounding yes.”
2pewresearch.orgNonprofits and think tanks
pewresearch.org
Backs: “If you compare today to the mid-to-late 20th century, the answer is a resounding yes.”
3democracyproject.orgNonprofits and think tanks
democracyproject.org
Backs: “However, if you look further back into the arc of American history, the country has survived several eras of equal or even greater division.”
4cfr.orgNonprofits and think tanks
cfr.org
Backs: “However, if you look further back into the arc of American history, the country has survived several eras of equal or even greater division.”
5reddit.comForums and Q&A
reddit.com
Backs: “The Disappearance of the Center: From the 1950s through the 1970s, political parties were "un-sorted." You could easily find conservative Southern Democrats and liberal Northeastern Republicans.”
6usc.eduAcademic
usc.edu
Backs: “According to DW-NOMINATE (a system political scientists use to map congressional voting records), the average Republican has shifted significantly to the right, and the average Democrat has shifted to the left, leaving a massive ideological gulf in the middle.”
7cam.ac.ukAcademic
cam.ac.uk
Backs: “The 2008 Turning Point: A Cambridge University study tracking American public opinion from the Reagan era to the mid-2020s found that public polarization on social and political issues was relatively flat during the 1990s and early 2000s. However, beginning in 2008—fueled by the financial crisis, the election of…”
8oup.comAcademic
oup.com
Backs: “No, It Is Not Worse Than America's Historic Highs. While today's polarization is unprecedented in modern times, American history is defined by cyclical waves of intense division. Several past eras match or exceed today's acrimony:”
9brookings.eduNonprofits and think tanks
brookings.edu
Backs: “The Civil War Era (1850s–1860s): This remains the ultimate benchmark of American polarization. The issue of slavery created a division so deep, geographic, and moral that it shattered the political system entirely.”
10nationalreview.comNews and mediaquality 0.57
nationalreview.com
Backs: “The issue of slavery created a division so deep, geographic, and moral that it shattered the political system entirely. It resulted in secession and a war that claimed hundreds of thousands of American lives.”
11syr.eduAcademic
syr.edu
Backs: “Today, polarization is increasingly "affective," meaning voters do not just disagree with the opposing party—they actively dislike, distrust, and fear them. Pew Research found that the percentage of Democrats and Republicans who view the opposing party as "immoral" almost doubled between 2016 and 2022.”
12nih.govGovernment
nih.gov
Backs: “The Digital Information Loop: Unlike the partisan newspapers of the 19th century, modern social media and news algorithms are designed to maximize engagement by feeding users content that triggers outrage and fear. This creates highly insulated "echo chambers" where it is easy to assume the worst about the other side.”