Sen. Hillary Rodham Clinton matches up well against Sen. John McCain in early polling about a possible presidential contest in 2008. A Time magazine poll released Sunday found McCain, R-Ariz., at 49 percent and Clinton, D-N.Y., at 47 percent among registered voters when people were asked which candidate they would support for president if they had to decide now. McCain had a 10-point lead over the Democratic nominee from 2004, Massachusetts Sen. John Kerry, and a 9-point lead over 2000 Democratic nominee Al Gore in similar matchups. Fifty-six percent of those surveyed said they have a favorable opinion of McCain...