The first presidential debate Tuesday devolved into name-calling, shouting and insults as President Donald Trump derailed the discussion with constant interruptions, unfettered by a moderator who struggled to keep calm.

Trump talked constantly through the 90-minute debate, sometimes incoherently and other times rattling off unfounded and baseless attacks against Democrat Joe Biden while refusing to let the moderator even ask questions.

Pressed repeatedly, Trump refused to condemn extremist supporters or urge them to stay peaceful in the event of a disputed election while once again suggesting, without evidence, that it might be “rigged.”

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