In a major shift, Republicans have distanced themselves from Trump over his failure to unambiguously condemn white supremacists during the presidential debate on Tuesday night. Trump faced a torrent of criticism, including a rare rebuke from the Senate’s top Republican, Mitch McConnell.

McConnell, the majority leader and a close ally of the president’s, told reporters he condemned Trump’s refusal to categorically denounce white supremacy during the presidential debate.

McConnell said, “It was unacceptable not to condemn white supremacists and so I do so in the strongest possible way.”

Trump’s raucous, interruption-filled debate performance also led the Commission on Presidential Debates to say Wednesday that it would make changes to the format of this year’s remaining debates. Among things they are considering is turning off the mic when Trump attempts to interrupt against the agreed-upon debate rules.

Trump’s continued efforts to sow doubts about the integrity of the vote, both at the debate and on Wednesday, also alarmed election-monitoring experts who said that they feared that he was laying the groundwork to delegitimize the election results.

CNN has an extensive fact-check of the debate which documents all of Trump’s repeated lies.

All these developments suggested that the debate was shaking up the campaign with a little over a month left until the election in a way not to Trump’s advantage.