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US voters' climate change opinions swing elections, analysis finds

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When voters cast their ballots in the 2016 and 2020 presidential elections, many were driven by their concern for climate change, according to new research out of CU Boulder's Center for Environmental Futures (C-SEF). The new report determined that views on climate change played a significant role in whom people voted for, concluding that the climate issue very likely cost Republicans the 2020 election, all else equal.

"This is obviously information that politicians and advocates across the will want to know, heading into the 2024 ," said Matthew Burgess, CIRES Fellow and C-SEF director. "How to reduce political polarization of is one of the questions our research group is most interested in currently, and this provides some insight."

In their new assessment, published today on Zenodo, Burgess and his co-authors, two C-SEF graduate students and researchers from Vanderbilt University and the University of California Santa Barbara, sought to understand the importance of climate change as a voter issue in the two most recent . The team used data from the nonpartisan Voter Study Group to analyze how issue opinions and demographics affected the 2016 and 2020 elections.

The research team used several techniques to assess how climate change opinion shaped ' choices: , a machine learning model, and a simulation of the Electoral College in which they could turn the role of climate change on or off. Their conclusion: Republicans could have gained at least a 3-percent swing in the , which almost certainly would have been enough to have taken the White House in 2020.

The team found personal views on climate change were one of the strongest predictors of voting behavior in 2020, especially among independents. Not surprisingly, they found the majority of Democrats and independents are worried about climate change. And, many younger and moderate Republicans also see climate change as an important issue—one-quarter of Republicans who think climate change is "very important" voted for President Biden in 2020.

Such widespread concern about climate change is currently a clear upper hand for the Democratic party. The party holds a 26-point advantage over Republicans on the issue, a lead larger than any other opposing topic between the two parties, in a recent poll.

Voters from a broad range of political persuasions seem to see Democrats as more capable of finding solutions and instating policies to address problems created by climate change, even if not every Democratic climate change policy is necessarily popular.

While the issue of climate change strongly predicts whom people voted for in 2020, overall, it is not the number-one concern among voters. Less than 5 percent of adults rank climate change as the single most important issue. More pressing issues include those that affect people's daily lives, like the economy, health care, education, and crime.

If climate change isn't voters' top issue, why is it such a strong predictor?

"One reason might be that most people see the evidence for climate change as so strong that, if a candidate were to deny or minimize that issue, they might trust that candidate less on other issues," Burgess said. "Another reason might be that voters are beginning to see a connection between climate change and the kitchen table issues they care about more, like the economy, security, and health. But we can't say for sure, and this is a key question for future research."

As the country prepares for the next election, the odds are good that change will influence whom they vote for.

More information: Matthew G. Burgess et al, Climate change opinion and recent presidential elections, Zenodo (2024). DOI: 10.5281/zenodo.10494414

Citation: US voters' climate change opinions swing elections, analysis finds (2024, January 17) retrieved 24 April 2024 from https://phys.org/news/2024-01-voters-climate-opinions-elections-analysis.html
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