Abortion is now the law of the land. Only if the Democrats lose massive support will there be any possibility of it being overturned, and with even 53 per cent of "practicing Catholics" voting for them, (along with even larger numbers of "lapsed catholics") there is no chance of overcoming those numbers.
A better question to ask is: "Why do Roman Catholics strengthen the Party of Abortion with their votes when they supposedly KNOW the Pope is against abortion?"