If Catholics care, then they need to stop voting pro abortion Democrat.
You asked about conservative ( I prefer the term orthodox) Catholics. Yet now you make it a general statement about all who self identify as Catholics. That is a dishonest tactic.
Also it is only recently that being Republican pretty much meant you were pro life or that being Democrat meant you were pro abortion. At one time Pro life democrats were not the rare species they are today. You also had pro abortion Republicans. So to say the vote division between Democrat and Republican as also been a pro life, pro abortion divide is false.