There’s really no other choice but to let Trump be Trump.While Kamala Harris rocked the DNC with an unexpected appearance and short speech to the rapturous crowd, Donald Trump continued to attack his new opponent, sometimes in odd ways. He is ignoring public advice from such close Republican allies as Lindsey Graham. “If you have a policy debate, he wins,” the senator said on “Meet the Press.” “Donald Trump the provocateur, the showman, may not win this election.“PUT POLICY ASIDE: KAMALA HARRIS WILL WIN OR LOSE BASED ON THE EXCITEMENT FACTORNikki Haley, who’s only nominally endorsed Trump, delivered a similar message to Fox’s Bret Baier: “The campaign is not going to win talking about crowd sizes. It’s not going to win talking about what race Kamala Ha …