Why Trump voters stick with him

Razib Khan gives a historical analogy, and explains:

Why Trump could murder someone and people would still support him

... many pro-Trump Americans perceive that Trump may protect them and their values, and see that anti-Trump politicians and leaders will never do so. ...

Many people on the Left and the Right in American culture see that white Christian America will be marginalized. Demoted. They seem that people are picking sides, and you have to stick to your tribe. It’s a matter of existential concern.

Many pro-Trump Americans perceive that the Left and the cultural elite hate them deeply in their bones. Wish they would disappear. Dislike their aesthetic preferences, think their religion is contemptible, and are simply waiting for their expiration date to come due so that history will march onward, and leave them an unpleasant memory.

Some of them see their livelihoods in danger, as they perceive that their political choices and identities will make them targets for being unpersoned, without a way to keep a roof over their heads or food on their family’s table. They accept the narrative of their marginalization, and are terrified of the consequences that will be meted out to them by their triumphalist adversaries in the culture wars.

When elite Americans argue that these voters are supporting a conman, they shrug.

He makes some good points, but I don't think he gets to the heart of the matter.

Vox Day tries to define the Alt Right as 16 principles:

In the interest of developing a core Alternative Right philosophy upon which others can build.

1. The Alt Right is of the political right in both the American and the European sense of the term. Socialists are not Alt Right. Progressives are not Alt Right. Liberals are not Alt Right. Communists, Marxists, Marxians, cultural Marxists, and neocons are not Alt Right. National Socialists are not Alt Right.

2. The Alt Right is an ALTERNATIVE to the mainstream conservative movement in the USA that is nominally encapsulated by Russel Kirk's 10 Conservative Principles, but in reality has devolved towards progressivism. It is also an alternative to libertarianism.

3. The Alt Right is not a defensive attitude and rejects the concept of noble and principled defeat. It is a forward-thinking philosophy of offense, in every sense of that term. The Alt Right believes in victory through persistence and remaining in harmony with science, reality, cultural tradition, and the lessons of history.

4. The Alt Right believes Western civilization is the pinnacle of human achievement and supports its three foundational pillars: Christianity, the European nations, and the Graeco-Roman legacy. ...

TL;DR: The Alt Right is a Western ideology that believes in science, history, reality, and the right of a genetic nation to exist and govern itself in its own interests.

Trump voters do not necessarily have a lot of loyalty to him personally. They vote for him because they agree with him on policy and principles.

Read those 16 Vox Day principles. If you agree with most or all of them, then Donald Trump is your man. No one else is even close. Other Republicans seem pathetic by comparison.