In a bitter debate filled with fire and insult, Hillary Clinton declared that Donald Trump’s vulgar comments about women reveal “exactly who he is” and prove his unsuitability to be president. Firing back, he accused her of attacking women involved in Bill Clinton’s scandals and promised she would “be in jail” if he were president.

Trump, who entered Sunday night’s debate desperate to steady his floundering campaign, unleashed a barrage of attacks and continually interrupted Clinton. He repeatedly called her a “liar,” labeled her the “devil” and contended she had “tremendous hate in her heart.”

On one substantive matter, he acknowledged for the first time that he had paid no federal income taxes for many years.

The debate was the culmination of a stunning stretch in the race for the White House, which began with the release of a new video in which Trump is heard making highly inappropriate comments. Many Republicans rushed to revoke their support, with some calling for him to drop out of the race.

Answering for his words for the first time, He said repeatedly that his words in 2005 were merely “locker room talk” and paled in comparison to what he called Bill Clinton’s abuse of women.

“She should be ashamed of herself,” Trump declared.

On the debate stage, Clinton did not respond directly to Trump’s accusations about her husband or her own role, but was blistering in her condemnation of his predatory comments about women in the tape released Friday.

“I think it’s clear to anyone who heard him that it represents exactly who he is,” she said, adding that she did not believe Trump had the “fitness to serve” as commander in chief.

The second debate was a town hall format, with several undecided voters sitting on stage with the candidates. The voters, all from the St. Louis area, were selected by Gallup.

The tension between Trump and Clinton was palpable from the start of their 90-minute debate, the second time they have faced off in the presidential campaign. They did not shake hands as they met at center stage.

Trump, who is several inches taller than Clinton, stood close behind her as she answered questions from the voters. At other times, he paced the stage, repeatedly interrupting her and criticizing the moderators.

Trump struggled at times to articulate detailed policy proposals, repeatedly dancing around questions about how he would replace President Barack Obama’s health care law, a measure he has vowed to replace. But he leveled several charges against Clinton that will likely energize his supporters, including saying she should have been criminally charged for her controversial email practices at the State Department.

In a rare public break with his running mate, Trump made clear that he did not agree with Mike Pence on how to deal with war-torn Syria. Last week, Pence said that the U.S. military should be ready to strike Syrian military targets that are under the command of President Bashar Assad. The threat of military action against the Russia-backed Assad government marks a departure from Trump’s preference for a focus on Islamic State targets.

Said Trump: “He and I haven’t spoken and I disagree.”

Trump’s campaign was already struggling before the new video was released, due in part to his uneven performance in the first presidential debate. Many Republicans saw Sunday’s showdown as his last best chance to salvage his campaign.

It was unclear whether Trump’s performance did anything to expand his support beyond his core backers. He did repeatedly cast Clinton as a career politician who had accomplished little during her years in Washington and would be incapable of bringing about change, one of his strongest argument in a campaign that has highlighted American’s deep frustration.

“With her, it’s all talk and no action,” Trump said.

The new revelations about Trump overshadowed potentially damaging revelations about Clinton’s paid speeches to Wall Street firms. Emails released by WikiLeaks last week showed Clinton told a group that it’s acceptable for a president to project differing positions in public and private.

Asked in the debate whether that’s “two-faced,” Clinton pointed to Abraham Lincoln, saying he did whatever he could to get the 13th Amendment passed, allowing emancipation of the slaves, by lawmakers who did not support African-American equality.

“I was making the point it is hard sometimes to get the Congress to do what you want them to do. That was a great display of presidential leadership.”

Rolling his eyes, Trump said, “Now she’s blaming the late, great Abraham Lincoln.”

In the heated debate’s final moments, the candidates briefly put aside their animosity when asked by a voter if they respected anything about each other.

Clinton said she respected Trump’s children, calling them “incredibly able and devoted.”

Trump, as if pulling a line directly from the Clinton campaign, called his Democratic opponent a “fighter.”

“She doesn’t quit, she doesn’t give up,” he said. “I respect that.”

(AP)