Here is a link to a very good piece by Richard Doerflinger in America magazine. Here is his concluding paragraph:
“In this essay I am not assessing the overall record or suitability of these candidates. But it is clear that the Trump-Pence administration will seek to reduce abortions and make further progress against Roe v. Wade, while Mr. Biden and Ms. Harris would greatly expand the killing of the unborn, require government to treat abortion as a positive good and pose an existential threat to Catholic and other caring institutions that respect innocent human life. Among Catholics, pledged to defend those with no voice of their own, that should count for something.”