I think this is the article, not from the J of Personality & Soc Psych, but from the Personality and Soc Psych Bulletin:
“More Polarized but More Independent Political Party Identification and Ideological Self-Categorization Among U.S. Adults, College Students, and Late Adolescents, 1970-2015” at
Abstract: In three nationally representative surveys of U.S. residents (N = 10 million) from 1970 to 2015, more Americans in the early 2010s (vs. previous decades) identified as Independent, including when age effects were controlled. More in the early 2010s (vs. previous decades) expressed polarized political views, including stronger political party affiliation or more extreme ideological self-categorization (liberal vs. conservative) with fewer identifying as moderate. The correlation between party affiliation and ideological views grew stronger over time. The overall trend since the 1970s was toward more Americans identifying as Republican or conservative. Older adults were more likely to identify as conservative and Republican. More Millennials (born 1980-1994) identify as conservative than either GenXers or Boomers did at the same age, and fewer are Democrats compared with Boomers. These trends are discussed in the context of social identification processes and their implications for the political dynamics in the United States.
However, that doesn’t necessarily mean they will be voting against Hillary, since she is as conservative as the typical Republicans were back decades ago, while many Republicans of today are way far to the right of yester-year’s conservatives. At least that’s my aged Boomer view of things.
I was from a Republican (Lincoln, Teddy Roosevelt) family (totally against FDR) and was for Nixon back in 1968 at age 21, but by 1972 had become a liberal Democrat for McGovern. Recently with many millennials, I was for Bernie. While I’m against abortion, I am also very much concerned about climate change, plutocracy, and racism in our country.
Also re today’s millennials being conservative, I’m thinking many may have been brainwashed by the textbooks in their schools. I know in Texas the Board of Edu has made sure they support conservative anti-knowledge – evolution and climate change just some disputed ideas.