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A controversial hot mic recording from 2005 of a vulgar conversation involving now Republican presidential nominee Donald Trump was released on Friday, leading to a rare apology from the presidential candidate.

During the second presidential debate at Washington University, Trump was asked to speak on his comments.

Moderator Anderson Cooper said Trump was talking about sexual assault, but Trump denied this and compared his comments to the dangers of ISIS.

Trump also said that his tape was “just words” and “locker room talk.” He brought up former president Bill Clinton’s sexual history after having invited several of the former president’s accusers to the front row.

RELATED: Campaign surrogate Rudy Giuliani admitted that Donald Trump was talking about sexual assault in this restrained interview

Another series of audio clips, focusing on various interviews between Trump and radio shock jock Howard Stern, have also been released. The candidate spoke vividly on his sexual activities, including infidelity, as well as his fascination with his daughter Ivanka.

Several Republican politicians retracted their endorsements, called for Trump to drop out, or have refused to defend his comments (including his own vice presidential pick) after the comments resurfaced. The Hill compiled a thorough list of the Republicans who have pulled their support or have asked Trump to step aside.

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