Scott Lemieux engages in some historical revisionism:

Comparing a potential backlash if marriage rights are recognized at the Supreme Court with Roe v. Wade is incorrect: The idea that the Roe case created a unique backlash or represented the courts racing ahead of public opinion, is a myth. If you don't want to take my research for it, read this fantastic new paper from Linda Greenhouse and Reva Siegel. Anti-choice forces were already strongly mobilized prior to Roe, and Roe and the legal pre-viability abortions it protected were popular in 1973, just as they are today—indeed, they're even more popular than same-sex marriage is now. While abortion was illegal in many or most circumstances in 46 states in 1973, this reflects the fact that it's very difficult to repeal existing legislation (especially when it's not enforced against affluent individuals); it did not reflect public support for abortion bans in most states.