Not a lawyer or an American, but procedurally, i would guess it’s too late to take his name off the ticket, so it would still be Trump and Vance, but with couch fucker being sworn if the Rs win. However, with the potent mixture of radicalisation, intellectual atrophy, and lead ingestion, you can’t take civil war off the table either.
From my extensive experience in this area (true crime podcasts lol), if your hitman is either quoting a reasonable price or offering a payment plan, they’re a cop.
Unless you’re in South Africa, in which case you can legitimately walk in to a bar and hire a murderer for a very reasonable price.