I voted this morning, and, as promised, did not vote for any of the Presidential candidates. I finally found a good explanation of my thinking, in an article published this summer from Matthew Franck. He writes:
After a lifetime of studying politics, I have finally, thanks to the electoral annus horribilis of 2016, arrived at an ethic of voting that I can defend against all rival ethics. It is simply this: Vote as if your ballot determines nothing whatsoever—except the shape of your own character. Vote as if the public consequences of your action weigh nothing next to the private consequences. The country will go whither it will go, when all the votes are counted. What should matter the most to you is whither you will go, on and after this November’s election day.
There will be much to say once this election is decided.