Podesta's appearance came after a grueling evening for Clinton and her backers, as they watched Donald Trump win in key state after key state, bringing him right to the edge of being declared the winner.
Clinton's decision not to speak ruffled some feathers early this morning.
"Didn't Hillary promise to accept the results?" said Chip Englander, a former aide to Marco Rubio and the campaign manager for Rand Paul's bid for President.
But in the next few minutes, the Associated Press took a step to call the race for Trump; soon after, Clinton called Trump by telephone to concede.
"I look forward very much to being your President," Trump said to supporters.
"While the campaign is over, our work on this movement is really just beginning. We're going to get to work immediately for the American people."