Here, a surly Thomist clearly lays out the moral case for not voting for Trump.
Now think about the election. This analogy is apt in one way, though defective in another. Certainly if there be an argument for Trump, it is not immediate material cooperation, but mediate material cooperation. But it is apt in this way… if your entire reasoning is “I vote for Trump because he is not Hillary” or some belief that “I have to choose the lesser evil”, a doctrine that is not determinate of the moral good, you are like the seller that becomes complicit in promoting evil, in order to minimize evil.
Remember, there is only an obligation to use all reasonable moral means to stop an evil and sometimes there are no such means. Yet people feel pressured to have to do something, anything. That is a trick of Satan.
If you think that there is a contribution to the common good that Trump will make, that is proportionately grave enough to justify material cooperation in whatever ill you think he will likely cause, then you have a case that he is a moral means, and the “worseness” of Hillary would be an added reason as to why one might choose it. But if that is not the case, then you are faced with it being an immoral choice no matter how much worse Hillary would be- it is excluded even before considering her. In which case, while you may re-examine Trump in light of the common good, you must reject temptations that come from scaremongering and villainization of Hillary. You must reject the idea that you should set aside your conscience because you “have to do something.”When man relies on himself alone, all comes to naught. Maybe the lesson here is to stop trusting in our political contrivances and stratagems. Cursed is he who places his hope in man, saith the Lord. Maybe it is good that you are bereft of some voting option to choose in order to battle Hillary; then maybe you will learn to see in it the vanity of human affairs and turn to the Lord.
Read the rest here.