Somehow the descriptor ‘Perot Bloc’ stuck.
They are white blue collar voters but they are not democrats, so they are not the Reagan democrats but are similar to those.
They are registered republican and independent.
Perot Bloc is a better descriptor than ‘White Voters’.
I think Trump has their attention.
I don't necessarily think that all white non-voters are part of the "Perot" block. So I'm still highly skeptical that "four million Republicans" stayed home in 2012.
You can make a case that US voters SHOULD have increased by about 1 million Republicans based on population increase, but that's not a given and that's certainly not four million.