This is the thing that our "two sides to every argument" political discourse distorts. Many issues don't poll at 50/50, but perception is often that they are 50/50.
Even on the pro-choice side there is a lot of variance on when abortion should be restricted (similar to how Europe restricts abortions the closer to full gestation). Same on the pro-life side, views aren’t binary.
Considering most people don’t understand why Roe v Wade was overturned, I’m not sure opinions on whether it should have been mean much, since belief of what that means is all over the place.
Personal views of pro-life/pro-choice though can be separated from the question of "Does a woman have the fundamental right to terminate a pregnancy?", which seems to have much more support. Would a significant majority choose to do that themselves? Maybe not. But it seems the majority feel women DO have that right, and should be able to make that choice themselves.