During the 2016 presidential campaign, many observers wondered exactly what motivated voters most: Was it income? Authoritarianism? Racial attitudes?
Let the analyses begin. Last week, the widely respected 2016 American National Election Study was released, sending political scientists into a flurry of data modeling and chart making.
The ANES has been conducted since 1948, at first through in-person surveys, and now also online, with about 1,200 nationally representative respondents answering some questions for about 80 minutes. This incredibly rich, publicly funded data source allows us to put elections into historical perspective, examining how much each factor affected the vote in 2016 compared with other recent elections.
The ANES provides us data on income and presidential vote choice going back to 1948. To remove the effects of inflation and rising prosperity, I plot the percentage voting for the Republican presidential candidate relative to the overall sample, by where they rank in U.S. income, from the top to the bottom fifth. The dashed horizontal line shows the average likelihood of voting for the GOP presidential candidate that year; a point above that means an income cohort was more likely than the other groups to vote for the Republican. To most directly test the Donald Trump income hypothesis, I've restricted this analysis to white voters.
2016 was plainly an anomaly. While the wealthy are usually most likely to vote for the Republican, they didn't this time; and while the poor are usually less likely to vote for the Republican, they were unusually supportive of Trump. And the degree to which the wealthy disdained the 2016 Republican candidate was without recent historical precedent.
The next chart shows how white GOP presidential voters have answered these questions since 2000. As we can see, Trump's voters appear a little less authoritarian than recent white Republican voters.
Many observers debated how important Trump's racial appeals were to his voters. During the campaign, Trump made overt racial comments, with seemingly little electoral penalty. Could the unusual 2016 race have further affected Americans' racial attitudes?
To test this, I use what is called the ”symbolic racism scale" to compare whites who voted for the Democratic presidential candidate with those who voted for the Republican. This scale measures racial attitudes among respondents who know that it's socially unacceptable to say things perceived as racially prejudiced. Rather than asking overtly prejudiced questions — ”do you believe blacks are lazy" — we ask whether racial inequalities today are a result of social bias or personal lack of effort and irresponsibility.
[Why did Scott Pruitt refuse to ban a chemical that the EPA itself said is dangerous?]
In the chart below, you can see the scores for white voters who supported the Democratic and Republican presidential candidates between 1988 and 2016. For clarity, the second and fourth items have been reversed so that the larger values always indicate higher animosity.
Finally, the statistical tool of regression can tease apart which had more influence on the 2016 vote: authoritarianism or symbolic racism, after controlling for education, race, ideology, and age. Moving from the 50th to the 75th percentile in the authoritarian scale made someone about 3 percent more likely to vote for Trump. The same jump on the SRS scale made someone 20 percent more likely to vote for Trump.
Racial attitudes made a bigger difference in electing Trump than authoritarianism.
(emphasis mine)
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