Democratic Gov. Ed Rendell and Republican challenger Lynn Swann are running neck and neck, a new independent statewide poll shows. In a hypothetical election, Rendell and Swann each would get 44 percent of the vote, with 10 percent undecided and 2 percent for others, according to the Strategic Vision poll. "Dead even. You can't get much closer than that," said David E. Johnson, pollster for Atlanta-based Strategic Vision, a public relations and marketing firm. This poll, similar to other recent polls, spells trouble -- according to the pollster -- for Rendell, of Philadelphia, who is seeking a second four-year term...