Generations: The Real Differences Between Gen Z, Millennials, Gen X, Boomers, and Silents—and What They Mean for America's Future

by Jean M. Twenge

Boomers shifted hard toward the Republican side during the 1980s and became majority Republican by the slimmest of margins in the late 2010s and early 2020s as they aged into their 50s, 60s, and 70s.