So, let’s look at Forming Consciences for Faithful Citizenship again.
In paragraph 22, it says “There are some things we must never do, as individuals or as a society, because they are always incompatible with love of God and neighbor. Such actions are so deeply flawed that they are always opposed to the authentic good of persons. These are called “intrinsically evil” actions. They must always be rejected and opposed and must never be supported or condoned.”
So, all intrinsically evil actions must be rejected. You take that to be that you cannot vote for someone who takes that position. What are these intrinsically evil actions?
In paragraph 22 & 23, the documents lists "abortion, euthanasia, human cloning, destruction research on human embryos, genocide, torture and targeting of noncombatants in acts of terror or war.
Based on your logic, I don’t see how a Catholic can support either Trump or Clinton.
Donald Trump thinks that waterboarding is torture and he wants to do that and ‘worse’. So, his own prudential judgement says that he is supporting an intrinsic evil. Unless you don’t think Donald Trump knows what he is talking about, in which case, I would wonder why you support him.