C-Span - Vice Presidential Debate Coverage: Live at 7pm (ET) (video will start automatically)
http://www.c-span.org/Debates/Events/VP-Biden—Rep-Ryan-Debate-in-Kentucky/10737434293/
Other links:
ABC News
http://abcnews.go.com/politics/live
Yahoo News
http://news.yahoo.com/elections/presidential-debate-20121011/
Bookmark.