own upon the audi ence that McCain was winning the hearts of ordinary people despite Bush's superior campaign treasury and array of endorsements from South Carolina's GOP establishment. "Money cannot buy what he's got," Graham said, referring to McCain. "We're going to rock their world tomorrow." McCain picked up the endorsement Friday of former Michigan Gov. William Milliken and former Michigan Supreme Court James Brickley. In a joint statement, the two Republicans said McCain was a "true American hero who is ready to be president." Gore avoids a picket On the Democratic side, Vice President Al Gore straddled a picket line problem Friday, trying to bridge a gap between two major Democratic constituencies gathered on opposite sides of a hotel's walls. With striking union workers picketing outside the Grand Hyatt in Washington, D.C., and the National Summit on Africa waiting indoors, Gore was torn. Ahead of him on Monday: a sure showdown over race relations with opponent Bill Bradley when the two debate at the Apollo Theater in Harlem. Gore avoided crossing the picket line by addressing the summit across a telephone line. "The hotel workers' union local 25 is picketing, and in solidarity with these workers, I will not cross that picket line," Gore told audi ence members, some of whom applauded. "At the same time, I did not want to miss the chance to share some words with you about the importance of our protecting the world today." Gore followed President Clinton, who spoke to the group a day earlier - at a convention center with no picket line. Both talked about helping Africa's developing nations by forgiving some of their debt, enacting favorable trade policies and improving public health by fighting AIDS. In another bid for minority votes, Gore on Friday released an ad in which he speaks Spanish and pledges to improve schools, Medicare and the fight against crime. Bradley also came out with a new ad on Friday, emphasizing highlights f...