A local television station, WNYW/Channel 5, is refusing to run a provocative advertisement promoting a Democratic candidate for Manhattan borough president. And the campaign of the candidate, Brian Ellner, is charging that the station is doing so because the spot takes a swipe at President Bush. The 30-second ad features Mr. Bush's face superimposed upon a middle-aged man's naked torso as Mr. Ellner says of the president that "the emperor has no clothes." Mr. Ellner also introduces his partner, Simon Holloway, in the spot - which the campaign says is the first time in city history that a gay candidate...