From NBC's Mark Murray
Hillary Clinton's statement: "Barack Obama's speech tonight laid out his specific, bold solutions and optimistic vision for our nation and our children's future.
"His speech crystallized the clear choice between he and Senator McCain. Four more years of the same failed policies or a leader who can tackle the great challenges we face: revitalizing our economy and restoring our standing in the world. I am proud to support Senator Obama, our next President of the United States and Joe Biden, our next Vice President of the United States."