WEST ALLIS, Wis. — President Bush, ignoring press derision of Zell Miller, yesterday began invoking him on the campaign trail, which brought raucous applause from voters who share the fiery Georgian's opposition to fellow Democratic Sen. John Kerry. "Zell Miller of Georgia, he's a discerning Democrat," Mr. Bush told a rally in Moosic, Pa., his first stop after accepting the party's nomination Thursday. The audience of 8,000 exploded in cheers. The reaction was even more dramatic at the president's next stop here, where the crowd of 20,000 made more noise than any other gathering the president has addressed during the...