RENO, Nevada — Sen. JD Vance knows he has had a rocky rollout as Donald Trump’s running mate, but the Ohio Republican doesn’t believe he has disappointed the former president.

“No,” Vance told NBC News in an interview aboard his campaign plane en route to a rally here Tuesday. “I mean, I knew that when I came out of the gate there was going to be a couple of days of positive media coverage, and then immediately they would go and attack me over everything that I had ever said in my…