This column by Dennis Prager is worth a few minutes of your time (in my opinion). If you stay home on election day and Hillary Clinton is elected president, I will blame you personally, even if your vote didn't make the difference. You do not want to incur my wrath.

Addendum: Here are two paragraphs from Prager's column (italics in original):

The most moving interview of my 33 years in radio was with Irene Opdyke, a Polish Catholic woman. Opdyke became the mistress of a married Nazi officer in order to save the lives of 12 Jews. She hid them in the cellar of the officer's house in Warsaw. There were some Christians who called my show to say that Opdyke's actions were wrong, that she had in fact sinned because she knowingly committed a mortal sin. In their view, she compromised Catholic/Christian doctrine.

In my view—and, I believe, the view of most Catholics and other Christians—she brought glory to her God and her faith. Why? Because circumstances almost always determine what is moral, even for religious people like myself who believe in moral absolutes. That's why the act of dropping atom bombs on Japan was moral. The circumstances (ending a war that would otherwise continue taking millions of lives) made moral what under other circumstances would be immoral.

It's shocking that this man doesn't understand the nature of a moral absolute. What he is espousing is situational ethics!