I think it is important for us as Catholics to understand the moral implications of this election and who we must support as Catholics. Once we have a good understanding of this, it is so important to pass this knowledge on to fellow Catholics who might vote based off the issues they see as most critical (regardless of whether or not the Catholic Church sees them as the most critical issues).
There are certain non-negotiable issues that may come up in an election: abortion, euthanasia, torture, homosexuality and divorce. These are intrinsic evils and the Church gives us perfect clarity on where we should stand on these issues. (If you or someone you know isn't clear on it, please reference the Catechism of the Catholic Church).
There are other issues that come up in an election: war, capital punishment, welfare, taxes, green policies, etc. that the Church does not necessarily have a perfectly clear teaching on, but rather leaves it to our judgement on where we stand. Therefore, it is not so critical that we vote for the candidate who supports our view on this second set of issues. While they are important, they should not ever hold priority over any single one of the other issues in the previous paragraph.
So, ask yourself, or ask your friends...which candidate is against the non-negotiable issues the Church sees as intrinsic evils? The answer should be pretty clear.