As foolscap001 pointed out in a previous comment, The Handmaid's Tale paints a vivid picture of a dystopia as a common SF plot device. What it failed to do for me, though, is convincingly explain how it happened. I doubt that was Atwood's intent, and in any case the novel stands on its own without it. However, in order for it to be an example of where this country will be headed if we don't somehow get the Religious Right under control, there must somehow be a reason to believe there's a way to get there from here. A half page of story about a massacre of the President and Congress, and a suspension of the Constitution, isn't enough - and that's not what would happen in the real world in those circumstances anyway.
I'm not about to tell a woman she has nothing to be scared of should Roe v. Wade be overturned. I cannot, however, share in the consternation about the subject evident in the reaction to the recent elections. It's a slippery slope argument, and nobody's yet shown that there's a can of Teflon, or even Crisco, waiting to pour.