The dangerous part for liberals – in 19 years, growth of number of voters in red states. This is already happening based on ideology and has a scientific name “Roe effect”, and now it will further increase red state population, leading to changes in electoral college.
Another question – some hope that Dems will be so outraged that they’ll drive to elections this November. (Well, given gas prices, maybe they need to be bussed). From rumors, even Trump is afraid of that. From experience, though, Rep base is showing up more for social issues, while those Dems who did not vote so far do not really care much. Maybe because Rep social agenda is positive for a normal human being, while the slogan “let’s make sure a girl in Alabama can get rid of her baby if she can’t afford to feed her” is less motivating.