Prominent GOP pollster Whit Ayers cited the need for “Republican candidates to talk about [climate change] intelligently” and further recommended they “not be dismissive” of the issue.

“The way you talk about climate change sends a signal to millennials about how sensitive you are to the environment,” Mr. Ayres said. A recent poll showed that 76 percent of Americans ages 18-29 accept that human activity causes climate change. “Millennials recently passed baby boomers to become the largest generation, so any party that hopes to own the future politically needs to be attractive to millennials.”

Ayers was on Florida Sen. Marco Rubio’s presidential campaign and now works for an organization backing Rubio’s senate re-election.