The thing that troubles me during this election season is seeing how many of us seem to be willing to set aside aside the obligation to discern the right and wrong of an issue. Instead our discernment involves stopping at the point where we find a justification for something we planned to do anyway or else we give only a superficial analysis and ends up overlooking things of importance that might have led us to a different conclusion. In writing this, I don’t intend to make myself the judge of how a specific individual formed their conscience. I only ask that people avoid being careless or otherwise flippant about their moral responsibilities when it comes to voting.
St. Thomas Aquinas once described the purpose of law this way:
Hence this is the first precept of law, that good is to be done and pursued, and evil is to be avoided. All other precepts of the natural law are based upon this: so that whatever the practical reason naturally apprehends as man’s good (or evil) belongs to the precepts of the natural law as something to be done or avoided.
Thomas Aquinas, Summa Theologica, I-II q.94 a.2 resp).
The determination of good and evil is not a moral calculus where you decide to give a certain weight to some issues and a lesser weight to other issues. That kind of thinking usually ends up going in the direction the individual tends wants it to go in the first place. That’s rationalization used as a smoke screen because we tend to weigh issues according to our preferences, and not as they stand in God’s eyes.