Describe a 1940-2012 Republican / 2016 Democratic Voter Demographic

[America Needs a 13-6 Progressive SCOTUS]

Orange County, California transitioned like this, but what type of Voter Demographic was switching like this to cause it to happen.

Edit: made changes to the thread question to make it sensible.

[America Needs a 13-6 Progressive SCOTUS]

Almost no one voted like this, since the vast majority of people who were old enough to vote in 1940 would have been dead by 2016.

If I had to describe someone, I'd say a 97 year old walking corpse from Vermont who's been senile for the past 15 years and accidentally checked the box for Hillary before dropping dead in the voting booth.

Well, describe a voter demographic like this; not necessarily an individual voter.

[America Needs a 13-6 Progressive SCOTUS]

Almost no one voted like this, since the vast majority of people who were old enough to vote in 1940 would have been dead by 2016.

If I had to describe someone, I'd say a 97 year old walking corpse from Vermont who's been senile for the past 15 years and accidentally checked the box for Hillary before dropping dead in the voting booth.

Well, describe a voter demographic like this; not necessarily an individual voter.

Possibly ancestral Republicans in wealthy New England towns?

Orange County, California is not New England. What Voter Demographic defection in Orange County, California caused the County to vote like this?