Secretary of State Colin Powell has resigned and the White House is expected to make the announcement on Monday, U.S. officials said.
"The Secretary announced to his staff this morning that he had submitted his resignation on Friday. He said he was staying on until a successor is confirmed and on board," a State Department official, who asked not to be named, said.
An administration official also said Powell had said he would stay on "until such a time as a replacement is named."
Powell, becomes the latest high-level member of President Bush's cabinet to announce plans to leave following the election.
Powell was often seen representing more moderate views on foreign policy in the Bush administration.