Washington -- Two prominent former U.S. senators who support John McCain warned this morning of "a potential nightmare" on Election Day and afterward if measures aren't taken to monitor precincts in battleground states including Ohio. John Danforth, a former senator from Missouri and a former United Nations ambassador, said he is deeply concerned "that this election night and the days that follow will be a rerun of 2000, and even worse than 2000." It could be worse than the hanging chad controversy and recounts in Florida, and lead to political accusations and court fights that could delay the country from...