If we’re concerned with voting according to Catholic principles, I honestly wonder how this election is an open question. Objectively speaking it takes five minutes on Google to determine that Trump is reasonably friendly to the prolife cause in tangible ways like influencing the judiciary (google his specific list of nominees which directly led to Priests for Life endorsing him), chipping away at Planned Parenthood’s abortion business and political power, as well as seeking specific economic reforms (look at his policy platform) that would improve position of poor families thus reducing the need for abortions.