I was going to say that there’s no way he would kill himself because his ego wouldn’t allow it. But before posting, I wondered if that was true so I looked it up. According to the Annals of General Psychiatry, it may actually be pretty likely.

Suicide risk is not rare in patients with narcissism, particularly in the context of severe narcissistic injury, where the patient feels shamed and/or vilified.

…snip…

Patients with narcissistic personality disorder are often thought to be less likely to make the kind of random non-lethal suicide attempts typical of the impulsivity associated with attempts made by patients with borderline personality disorder. However, Ronningstam et al. [8] point out that NPD patients are at high risk for completed suicides or highly lethal attempts without warning signs or self-disclosures. Indeed, they are made with the intention to end their lives. [Emphasis mine]

I could see Trump feeling shamed and vilified. Even more so as the various trials progress. If or when he thinks a guilty verdict is coming at him this could become a real risk. I hope they take this risk into account during the trials. I want this man in prison for as long as possible before he shuffles off the mortal coil.