lesser evil voting. Problem is, as DallasDoc has said, the argument Trump is the greater evil cannot be made because he is so unpredictable. Good article here that's right along these lines:

Clinton, on the other hand, has a long record based on the considerable experience she likes to tout, so we know what to expect from her. That record, through her votes as a Senator and especially through her more direct actions as Secretary of State, includes responsibility for hundreds of thousands of killings of innocent civilians in mostly Islamic countries – Iraq, Afghanistan, Libya, Syria, Pakistan, Yemen and Somalia, to name only the most blatant and direct examples – and the destruction of the lives and communities of millions of survivors. That pretty much qualifies as genocide. Add to that her total support for the worst atrocities of Israel against the Palestinians in the occupied territories, and her crucial support for the brutal coup in Honduras, resulting in much more death, suffering, and injustice that still continues.

Trump is certainly the greater evil in terms of racist and xenophobic rhetoric and proposals. Discourse is important, as he is inciting the worst and most dangerous forms of racism and proposing horrible anti-immigrant policies. The Obama administration may have set records for deportations of undocumented immigrants with Hillary Clinton´s collaboration, but I´m willing to grant her lesser evil status on that one.

But is that a greater evil than genocidal mass murder? Is there any greater evil? Even when it´s done without a trace of racist language or a hint of hatred for the victims?

Emphasis added.

The question is, will it be more difficult to keep Trump in line than to keep Hillary from doing her carnage?

Trump feels worse; he´s certainly the more detestable personality. But how do we measure the different evils and sum them up to find the lesser evil? I don´t think we can, but again, how can there be a greater evil than genocidal mass murder? In addition to the terrible destruction at home and abroad caused by “free trade” and other economic policies promoted by Hillary Clinton, as well as the welfare and crime policies passed by her husband with her advice and unqualified support. At the very least, the case for Clinton as the lesser evil should be made more strongly, rather than just taking it as obvious because of the obvious horrors of Trump. Trump wears his evils on his sleeve and celebrates them, while Clinton hides them behind a much friendlier manner and discourse. But if we really care about the oppressed of the world and the 99 percent of the United States, we have to look below the surface and take everything into account.

~snip~

Meanwhile, I understand the people who remain critical of Hillary Clinton but say they will vote for her because of Supreme Court nominations, immigrant rights, neo-fascist rumblings, and fear of an unstable and unpredictable Donald Trump. I share their concerns and their fears.

But if that´s the motivation to vote for Clinton, just be clear about the harm she has done and will continue to do, especially as a genocidal murderer who has made it clear she will continue to kill and destroy, in the Middle East and probably elsewhere. Recognize that this is the price and say, along with Madeleine Albright, “we think it’s worth it”.

Time will tell. More here: Say Anything: Sanders and the Lesser Evil Mantra