I love John McCain for his bravery, his service, his sacrifice, and his love of country. Those are the qualities that motivated me to enthusiastically go to the polls and vote for him. He'd make a fine president, light years beyond Chairman O.
“Incoherent” may be harsh, but John McCain simply could not connect with a message and a vision of where he wanted to take America, and in the end, he failed to convince the jury.
I hope that helps.