The Democrats Want to Maintain the Status Quo with regard to Abortion

The current status quo concerning Abortion gives the Democrats more power and new moderate voters, both independents and moderate Republicans.  The Republicans are losing voters in the Red States while voters in the Blue States are more motivated.  Why would the Democrats want to change the status quo?  Lindsey Graham's proposal shows that the Republicans have no viable options to deal with the fact that they now own the abortion issue and the consequences of being out of alignment with most Americans.