U.S. Vice President and Democratic presidential nominee Kamala Harris has not formally conceded after former U.S. president and Republican nominee Donald Trump claimed victory on Wednesday.

The race was called by the Associated Press around 5:30 a.m. ET, when Trump received more than the 270 electoral votes required to win the presidency.

Harris spent election night in Washington, D.C. at Howard University, a historically Black institution, where Harris graduated from in 1986. Her supporters gathered together outside and watched as election results came in live on television. As Trump’s impending victory became clearer, the mood shifted with some supporters crying as they left, ABC News reported.