Atwood self-describes as a red tory; she's just very appalled at the aesthetics and excesses of the north American conservative movement. I get the impression that she's a pretty typical modern lib. She's concerned about the bad places that society can go, but I don't think she has a vision of what a better world can look like. That's Le Guin's bread and butter, as she always wrote about alternate societies and what the implications of them would be for the suffering and flourishing of the people living in them.