Someone should set up a service that links politically-shunned grandparents to adult couples within an hour's drive, who have small kids with no living grandparents, and who are conservative or middle of the road politically. They can "adopt" those families - at least emotionally if not legally. To include birthdays + holidays. Maybe even a vacation together, paid for by the adoptive grandparents.
If this situation works out longterm, I'd expect the adoptive grandparents would seriously consider changing their wills.
I mean, why not?
I love your idea!