Its utilitaritarian philosophy. Its saying if you stand by and do nothing an even worse person will do things in your name. The result of nonvoters here was trump. its rather explicit. By not voting “your guy” is whoever wins, aka Trump. That is the essence of the statement.
critics of acts of utilitarianism raise three strong objections against it. According to these critics, utilitarianism a) approves of actions that are clearly wrong, b) undermines trust among people, and c) is too demanding because it requires people to make excessive levels of sacrifice.