House Speaker Nancy Pelosi says this about the Democratic Party’s campaign for president: “I think the tone could be improved.’’It’s not so much the candidates, she suggested, as the surrogates. “I think their people are going at each other, and I think that that's wearing out. I don't think people are interested in that,’’ Pelosi said on ABC This Week with George Stephanopoulos. “But I do think that before we go to the convention, we will have a nominee. We'll go into that convention unified, we'll come out of that convention unified, and we'll be ready to win.’’