NPR Staff

Robert O'Brien's remarks, made last week at a security forum, stand in contrast to President Trump's refusal to acknowledge he lost the Nov. 3 election. O'Brien promised a professional transition.

Joe Biden has already been called as the presidential winner. On Wednesday, the AP called Alaska for Trump, putting the Electoral College count at 290 for Biden and 232 for President Trump.

In his first public remarks since Joe Biden won the presidential election, President Trump hinted at the possibility of turnover at the White House, which he has resisted over the past week.

The AP and other networks called the presidential race for Joe Biden on Saturday.

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The Trump campaign wants to cease or pause ballot counting in key states. Meanwhile, he and his supporters continued years of deliberate denigration of the integrity of U.S. elections.

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A national survey measures the demographics, policy views, voting behavior and other attributes of Americans who participated in the election. This is an alternative to traditional exit polls.

Live coverage of the historic election will be available on air, online and on mobile, Tuesday night and into the week.

View live results for Oklahoma's ballot measures and races for president, Senate and House.