In his latest video commentary of GQ magazine, Keith Olbermann weighed on Republican presidential nominee Donald Trump’s refusal to say he would absolutely accept the outcome of November’s general election.

Trump told moderator Chris Wallace at the final presidential debate he would have to wait and see if he would accept those results, to which Olbermann said was “the moral equivalent of treason.”

“This is the moral equivalent of treason,” Olbermann declared. “When, Republican leaders, will you speak up? Speak up not in your self-interest, not as a strategic move for your own campaign, not as positioning for the future. When will you speak up for the Constitution? When will you speak up for democracy? When will you speak up for the United States of America?”

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