nuts (adjective) /nəts/
    Insane

in·sane (adjective) /inˈsān/ 
    In a state of mind that prevents normal perception, behavior, or social interaction; seriously mentally ill
    (of an action or policy) Extremely foolish; irrational or illogical
    "Insanity is doing the same thing over and over again and expecting different results." -- Albert Einstein

de·lu·sion (noun) /diˈlo͞oZHən/ 
    An idiosyncratic belief or impression that is firmly maintained despite being contradicted by what is generally accepted as reality or rational argument, typically a symptom of mental disorder
    The action of deluding someone or the state of being deluded

---

To believe and support most candidates is to share the qualities of one who is 'nuts', 'insane', or 'delusional'