I'm sorry, I misled you. He was referring to the type of people in Britain in the late 30's and early 40's who, from what I've read about them, seem to have the same political leanings as today's Dems. He wasn't predicting, he was describing people then with an expression just as apt for the Dems today.
However, enough of me leading you astray, I gotta catch a bus in the pouring rain. See you later, Miss Lion!