Here is an article from The Society Pages about dead people who won't vote:
Black people in the U.S. vote overwhelmingly Democratic. They also have, compared to Whites, much higher rates of infant mortality and lower life expectancy. Since dead people have lower rates of voting, that higher mortality rate might affect who gets elected. What would happen if Blacks and Whites had equal rates of staying alive?
These articles are interesting, but the conclusions are too simple: It is too simple to say that if things were different then people would act as if things were the same.