Trump supporters -- why do you support him?

Question says it all, really. With the American election drawing closer and closer, the support Trump has been getting has gone beyond a joke for me. I'm actually genuinely curious. Trump supporters, can you explain to me just what it is about Trump that makes you believe he can't be stumped?

Please be civil and courteous in your answers. Anyone who tries to be cute and start spouting inflammatory rhetoric will be deleted. I'm looking for a civil discussion here, not a flame war.