No one thought that he’d make it this far, yet he stands in third place. You may not be able to vote for him, but you can support him with help getting out the word and a donation (1,5, 10, whatever).
This is doable.
But it is Iowa, and it’s the only place he is doing anything. I see him as a possible Huckabee — catching a bit of fire, but just enough to ensure that no conservative can win the nomination.