WEST PALM BEACH, FLA. - With time running out on John Kerry, former Clinton administration operatives recently added to his campaign are touting a refreshed and reinvigorated candidate. By using sharper rhetoric and by de-emphasizing once-feature topics such as his Vietnam War service that aides now deem less effective, Kerry is "really hitting stride and making some real strong arguments now," said Mike McCurry, a former press secretary for President Clinton, now serving Kerry's campaign. But many of the latest polls show Kerry trailing or tied with President Bush, even in some of the key states where Kerry was ahead...