Hillary Clinton is leading Donald Trump in a new poll just hours before the first 2016 presidential debate. The latest NBC News/Survey Monkey poll shows Clinton up 45-percent to 40-percent, which is the same as last week. Libertarian Gary Johnson has ten-percent support, and Green Party candidate Jill Stein has three-percent. When Clinton and Trump are pitted against each other, the poll shows Clinton has a seven-point lead. The Democratic and Republican nominees will be head to head tonight for the first presidential debate.