The polling bears out Mr. Heye’s prediction of a backlash. Nearly 60 percent of Republicans between the ages of 23 and 38 say that climate change is having an effect on the United States, and 36 percent believe humans are the cause. That’s about double the numbers of Republicans over age 52.
But younger generations are also now outvoting their elders. According to a Pew Research Center analysis, voters under the age of 53 cast 62.5 million votes in the 2018 midterm elections. Those 53 and older, by contrast, were responsible for 60.1 million votes.