WASHINGTON (Reuters) - Democratic front-runner Hillary Clinton trails five top Republican presidential contenders in general election match-ups, a drop in support from this summer, according to a poll released on Monday. Clinton's top Democratic rivals, Barack Obama and John Edwards, still lead Republicans in hypothetical match-ups ahead of the November 4, 2008, presidential election, the survey by Zogby Interactive showed. Clinton, a New York senator who has been at the top of the Democratic pack in national polls in the 2008 race, trails Republican candidates Rudy Giuliani, Mitt Romney, Fred Thompson, John McCain and Mike Huckabee by three to five...