I think abortion is such a contentious issue because of the polarizing effect of Roe. When the Supreme Court handed down the decision 70% of the states already permitted abortion with varying restrictions.

If it gets struck down (unlikely, in my opinion) we'll return to the pre-Roe situation. States like South Carolina will make abortion illegal, and both Democrats and Republicans in those states will support the ban. In states like California, the opposite will occur - you won't find an anti-abortion candidate of either party for local dog-catcher.

In the end it won't hurt Democrats or Republicans - the issue will move from the federal to the state level, and the national parties won't even bother addressing it.

That's the way the system was set up. Roe v. Wade is really a very unconstitutional ruling - there isn't a shred of actual support for it anywhere in the text of the constitution. It's time for the experiment in judicial legislating to end and the issue returned to the states where it was for 200 years.