Please compare changes in life expectancy of white people in red states with white people in blue states:
there's a solid body of research on this. Let me pull together what's known, including the race-specific data.
Yes, this is a well-researched question, and the answer is fairly striking. Here's what the evidence shows:
The big picture
Large and growing differences in life expectancy across states have emerged since around 1980, and they partly reflect dramatic changes in state policy environments that have polarized along partisan lines over the same period.
PubMed Central
White populations specifically
Clear policy gradients emerge for White populations — life expectancy for white Americans is meaningfully patterned across the liberal-to-conservative policy spectrum, with the liberal state advantage growing over time. Male and female life expectancy could be as much as 2.8 and 2.1 years longer, respectively, under liberal state policy environments.
Duke University Press
The gap has grown substantially
The difference between the highest and lowest life expectancy states has grown to 7.0 years — the largest ever recorded.
syr
A concrete example
Oklahoma and Connecticut had identical life expectancies (71.1 years) in 1959. But between 1980 and 2019, life expectancy rose by just 2.5 years in Oklahoma (to 76.1), compared to a 5.9-year jump in Connecticut (to 80.8). Oklahoma's policy environment shifted toward conservative, while Connecticut's became more liberal.
PRB
What's driving it
Research links more conservative marijuana policies and more liberal policies on environment, gun safety, labor rights, economic taxes, and tobacco taxes to lower mortality. Specifically, gun safety laws were associated with lower suicide risk among men, labor protections were tied to lower alcohol-related death, and tobacco and economic taxes were linked to lower cardiovascular death risk.
PRB
What the studies can't fully tell us
Correlation does not prove causation, and many different factors affect who lives and who dies. Researchers try to control for population characteristics (education, income, demographics), but disentangling policy from those background factors is genuinely hard.
The American Prospect
Where to find the data yourself
The best public datasets for this are:
- IHME (Institute for Health Metrics and Evaluation) — they published state-level life expectancy by race/ethnicity (White, Black, Hispanic) from 1990–2019, including life expectancy at the state level by racial/ethnic group for each year between 1990 and 2019. Freely downloadable at healthdata.org. Global Health Data Exchange
- CDC WONDER — mortality and life expectancy by race, state, and year going back to 1968.
- U.S. Mortality Database (UC Berkeley) — state-level all-race data back to 1959.
The IHME dataset is probably the most useful for your specific question (white life expectancy by state, categorized by political lean), though it starts at 1990 rather than 1980. For pre-1990 white-specific state data you'd need to work with the CDC WONDER raw mortality files, which takes more effort.