Obama Accepts Nomination On Final Day Of Democratic National ConventionCHARLOTTE, NC – SEPTEMBER 06: Democratic vice presidential candidate, U.S. Vice President Joe Biden and his wife Second lady Dr. Jill Biden watch as their son Attorney General of Delaware Beau Biden speaks during the final day of the Democratic National Convention at Time Warner Cable Arena on September 6, 2012 in Charlotte, North Carolina. The DNC, which concludes today, nominated U.S. President Barack Obama as the Democratic presidential candidate. (Photo by