The vice presidential candidates' debate tonight between Republican Vice President Dick Cheney and Democrat Sen. John Edwards, touted by the mass media as a possible pivot point in the presidential election, is missing a vital component -- four other candidates for the same office. Because several candidates were excluded from the "official" debate, there will actually be two debates between vice presidential candidates tonight in Cleveland, Ohio. Libertarian Richard Campagna, Pat LaMarche of the Green Party, Ralph Nader's independent running mate Peter Camejo, and Chuck Baldwin of the Constitution Party all plan to take part in a debate for "third...