By ANITA KUMAR, Times Staff Writer Published August 18, 2006 ORLANDO - U.S. Rep. Katherine Harris came to Sen. Bill Nelson's hometown Thursday to try to prove she could unseat him in the fall, but the help she hoped for didn't come. It was expected to be one of Harris' biggest events leading up to the Republican Senate primary next month, with a host of prominent public officials standing by her side. But no elected official showed up at Orlando Executive Airport for Harris' fly-in - just 30 to 40 people, in a hangar that could hold hundreds. Those who...