Commission on Presidential Debates turns down Trump campaign's request to add a fourth debate

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The commission also rejected the Trump campaign's list of potential moderators and its proposal to move up the first debate to early September. "The Commission will adhere to our longstanding procedure of selecting the debate moderators. It will do so with great care, as always, to ensure that the selected moderators are qualified and fair," said the commission in a statement. ALSO: Don't deprive Americans of a Trump-Biden debate spectacle.