NASHVILLE -- After nearly two years of campaigning, U.S. Rep. Harold Ford Jr. of Memphis made his candidacy for the U.S. Senate official today, filing qualifying papers at the Tennessee secretary of state's office at 11:56 a.m. The filing ends months of lingering speculation in some quarters on whether the five-term congressman would really leave his safe Democratic 9th District seat to make the uphill run for the other side of the U.S. Capitol. Still, Ford is only the second of the five major Senate candidates of both parties to file the documents to enter the race, with the qualifying...