Donald Trump overcame all odds Wednesday, riding the wave of an unprecedented populist movement to become the 45th president-elect of the United States.

A wealthy real-estate developer and former reality TV host, Trump rode a wave of anger toward Washington insiders to win the White House race against Clinton, the Democratic candidate whose gold-plated establishment resume includes stints as a first lady, U.S. senator and secretary of state.

The Republican presidential nominee surpassed the 270 electoral vote threshold needed to win the White House. In doing so, he completed the most massive upset in modern political history, beating Democratic challenger and former Secretary of State Hillary Clinton, as well as one of the most promising fields of Republican candidates in a generation.

During a speech in Manhattan early on Wednesday, the president-elect promised unity after a dark campaign.

“I pledge to every citizen of our land, that I will be a president for all Americans. And this is so important to me,” Trump said.

He added: “It is time for us to come together as one united people.”

Clinton called Trump early Wednesday to concede after the brutal campaign.

“She congratulated us on our campaign,” Trump said. “Hillary has fought very long and very hard and we owe her a major debt of gratitude for her service.”

Almost every major forecasting aggregator, including FiveThirtyEight, RealClearPolitics, the New York Times, and HuffPost Pollster all heavily favored a Clinton victory in the lead-up to Tuesday’s race.