I think the DUmp's professionally-diagnosed lunatic, Dennis the Menace, could mount a challenge if he has enough staying power.
Come to think of it, there's been no sign of him for four or five days.
I hope he hasn't hanged himself yet.
That would ruin his candidacy, unless he does it in November or December.
A year of his deranged posts, capped off with a fourth-quarter suicide, would be a brilliant campaign.