Cited by 1,089Electoral Systems and Political ParticipationPopulism, Right-Wing MovementsFiscal Policies and Political Economy

The DOI matches its Crossref record; 96 of the 97 references it cites were found in a registry or an index, and 1 are not checked yet; 15 of the 87 sources its claims cite were checked for support.

Importing Political Polarization? The Electoral Consequences of Rising Trade Exposure

Open access
Autor, David, Dorn, David, Hanson, Gordon, Majlesi, Kaveh·2020·American Economic Review

Abstract

Has rising import competition contributed to the polarization of US politics? Analyzing multiple measures of political expression and results of congressional and presidential elections spanning the period 2000 through 2016, we find strong though not definitive evidence of an ideological realignment in trade-exposed local labor markets that commences prior to the divisive 2016 US presidential election. Exploiting the exogenous component of rising import competition by China, we find that trade exposed electoral districts simultaneously exhibit growing ideological polarization in some domains, meaning expanding support for both strong-left and strong-right views, and pure rightward shifts in others. Specifically, trade-impacted commuting zones or districts saw an increasing market share for the Fox News channel (a rightward shift), stronger ideological polarization in campaign contributions (a polarized shift), and a relative rise in the likelihood of electing a Republican to Congress (a rightward shift). Trade-exposed counties with an initial majority White population became more likely to elect a GOP conservative, while trade-exposed counties with an initial majority-minority population became more likely to elect a liberal Democrat, where in both sets of counties, these gains came at the expense of moderate Democrats (a polarized shift). In presidential elections, counties with greater trade exposure shifted toward the Republican candidate (a rightward shift). These results broadly support an emerging political economy literature that connects adverse economic shocks to sharp ideological realignments that cleave along racial and ethnic lines and induce discrete shifts in political preferences and economic policy. (JEL D72, F14, J15, L82, R23)

Verified 2026-10-11 · 1 reference not checked yet

Overview

Integrity signals

Registry

Crossref · 10.1257/aer.20170011

Cites

96 of 97 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

15 of 87 cited sources checked · 7 supported · 0 flagged · accuracy not yet measured

Show all 169 claims

  • Probably not a substantial claim. 47
  • It may state two separate claims as one. 93
  • The quote only partly states this claim. 3
124 of 124
  • The paper relies on this without support.

    China's share of world manufacturing exports surged from 4.8 percent in 2000 to 15.1 percent in 2010.

    “China's share of world manufacturing exports surged from 4.8 percent in 2000 to 15.1 percent in 2010.”
  • The paper relies on this without support.

    Majority White non-Hispanic districts vastly outnumber majority-minority districts.

    “Of course, majority White non-Hispanic districts vastly outnumber majority-minority districts.”
  • The paper relies on this without support.

    The non-US import exposure instrument affects local US political outcomes only through its effect on US import exposure.

    “To identify the causal effect of rising Chinese import exposure on local-level political outcomes, we employ an instrumental-variables strategy that accounts for the potential endogeneity of US trade exposure.”
    “we instrument the measured import-exposure variable ΔI P jτ cu with a non-US exposure variable ΔI P jτ co that is constructed using data on industry-level growth of Chinese exports to other high-income markets:”
  • The authors state this as an assumption.

    Higher campaign donations indicate more fiercely contested campaigns.

    “If higher donations indicate more fiercely contested campaigns, then these results suggest that greater trade exposure increases campaign intensity.”
  • The paper relies on this without support.

    The China trade shock had almost entirely unfolded by 2008.

    “by which point the China trade shock itself had almost entirely unfolded.”
  • The paper relies on this without support.

    The full impact of the 2002-2010 China trade shock was yet to be felt during 2002-2004 and 2002-2006, and China's reform-driven export boom was largely complete from 2002-2008 onward.

    “During 2002-2004 and 2002-2006, the full impact of the 2002-2010 China trade shock is yet to be felt; for the 2002-2008 and 2002-2010 periods forward, China's reform-driven export boom is largely complete.”
  • The authors state this as an assumption.

    Wedge issues in the United States divide voters along racial and ethnic lines.

    “Under the plausible supposition that wedge issues in the United States divide voters along racial and ethnic lines”
  • The paper relies on this without support.

    There is a paucity of previous evidence that substantiates a causal impact of specific economic shocks on political polarization.

    “Yet, there is a paucity of previous evidence that substantiates a causal impact of specific economic shocks on political polarization.”
  • The paper relies on this without support.

    In the 2000s and 2010s, nearly all senior executives and directors of Fortune 500 companies gave to political campaigns.

    “In the 2000s and 2010s, nearly all senior executives and directors of Fortune 500 companies gave to political campaigns.”
  • The authors state this as an assumption.

    China's economic growth during the 1990s and 2000s generated a substantial shock to the supply of US imports but only a modest change in the demand for US exports.

    “To a first approximation, China's economic growth during the 1990s and 2000s generated a substantial shock to the supply of US imports but only a modest change in the demand for US exports.”
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Claims other papers make about this one

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Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Party-specific CF-score standard deviations are reversed

    Minor

    The text assigns the 1992 standard deviations of 0.20 to Republicans and 0.26 to Democrats; Figure 3's note assigns those values to the opposite parties.

  • Fox News estimate is attributed to the wrong table column

    Minor

    The text assigns a roughly 10.5-point Fox News estimate to column 5 of Table 2, but column 5 reports 8.32. The roughly 10.5-point estimate appears in column 6.

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Citations

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Research works printed but not linked: 1

  1. Hsieh Chang-Tai, 2015, Brookings Papers on Economic Activity, 295

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Metadata

Authors
Autor, D., Dorn, D., Hanson, G., & Majlesi, K.
Affiliations
  • Pew Research Center (US)
  • University of Zurich (CH)
  • National Bureau of Economic Research (US)
  • Center for Economic and Policy Research (US)
Venue
American Economic Review
Published
2020-10-01
Volume
110
Issue
10
Pages
3139-3183
ISSN
0002-8282 (ISSN-L)
OpenAlex
W2522247035
Cited by
1,063
References
55
Citations by year
2026: 101 · 2025: 193 · 2024: 202 · 2023: 168 · 2022: 120 · 2021: 135 · 2020: 61
FWCI
420.25
Type
journal article
Language
en
Open access
Locations
  • American Economic Review (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion, other-oa)
Funders
  • National Science Foundation (1227334)
  • Russell Sage Foundation
  • Smith Richardson Foundation
  • Sid W. Richardson Foundation
  • Sage Foundation
  • Accenture
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (155804, 154446)
  • Russian Science Foundation
  • University of California, San Diego
Topics
  • Social Sciences › Political Science and International Relations › Electoral Systems and Political Participation
  • Social Sciences › Political Science and International Relations › Populism, Right-Wing Movements
  • Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Fiscal Policies and Political Economy
Keywords
political polarization, import competition, trade exposure, ideological realignment, US presidential election, congressional elections, Fox News, campaign contributions, China trade, local labor markets, commuting zones, political economy of trade

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