WASHINGTON — Hillary Rodham Clinton battled questions for hours from Republicans in a hearing that grew contentious but revealed little new about the 2012 attacks in Benghazi, Libya as she defended her record while seeking to avoid any mishap that might damage her 2016 presidential campaign.

Democrats have accused the Republicans of using the investigation into the worst episode of her tenure as Secretary of State a ploy to derail Clinton’s White House bid, noting that it is the eighth Congressional investigation into the attacks.

But the hearing Oct. 22 took place at a moment of political strength for Clinton, the front-runner for the Democratic nomination, coming just a day after a potential rival for the nomination, Vice President Joe Biden, announced he would not join the race. Clintonalso is riding the momentum of a solid debate performance last week.

Pressed about events before and after the deaths of four Americans, Clinton had confrontational exchanges with several Republican lawmakers but also fielded supportive queries from Democrats.

The hearing ended at 9 p.m. some 11 hours after it began. But five hours into the hearing, Republicans had yet to ask the Democratic Presidential front-runner a single question about the night of Sept. 11, 2012, itself.

The committee’s Chairman, Trey Gowdy, portrayed the panel as focused on the facts after comments by fellow Republicans describing it as an effort designed to hurt Clinton’s Presidential bid.

Democrats have pounced on those earlier remarks and have pointed out that the probe has now cost U.S. taxpayers more than $4.5 million and, after 17 months, has lasted longer than the 1970s Watergate investigation.

Gowdy, a former Federal prosecutor, said the Republicans’ efforts were not a prosecution.

Contradicting him, Rep. Adam Smith, a Democrat from Washington, told Clinton: “The purpose of this committee is to prosecute you.”

In one tense moment, Republican Rep. Jim Jordan accused Clinton of deliberately misleading the public by linking the Benghazi violence at first to an Internet video insulting the Muslim Prophet Muhammad.

Clinton, stone-faced for much of the hearing, smiled in bemusement as Jordan cut her off from answering. Eventually given the chance to comment, she said only that “some” people had wanted to use the video to justify the attack that killed Ambassador Chris Stevens and three other Americans, and that she rejected that justification.

The argument went to the origins of the disagreement over Benghazi and how President Barack Obama and his top aides represented the attack in the final weeks of his re-election campaign.

And it reflected some of the raw emotion the deadly violence continues to provoke, something Clinton will have to face over the next year of her White House bid even if the Republican-led special investigation loses steam.

For Clinton, the political theater offered opportunity and potential pitfalls. It gave her a high-profile platform to show her self-control and command of foreign policy. But it also left her vulnerable to claims that she helped politicize the Benghazi tragedy.

“There were probably a number of different motivations” for the attack, Clinton said, describing a time when competing strands of intelligence were being received and no clear picture had yet emerged. Speaking directly to Jordan, she said: “The insinuations that you are making do a great disservice” to the diplomats and others involved.

“I’m sorry that it doesn’t fit your narrative. I can only tell you what the facts were,”Clinton said.

There were no gaffes for Clinton and — beyond that exchange— few heated interactions. She never raised her voice as she had at a Senate hearing on Benghazi in January 2013.

Instead, it was the panel’s members who engaged among themselves in the nastiest fight, with Clinton merely observing.

Democrats pressed for the release of the full transcript of a Clinton adviser’s private testimony, drawing Gowdy, into an angry debate. The panel eventually voted against the release, all five Democrats in favor, all seven Republicans against.

Gowdy said important questions remain unanswered: Why was the U.S. in Libya, why were security requests denied, why was the military not ready to respond quickly on the 11th anniversary of 9/11 and why did the Obama administration change its story about the nature of the attacks in the weeks afterward?

Clinton, in turn, focused on the bigger picture, starting with a plea for the U.S. to maintain its global leadership role despite the threat posed to its diplomats.

She said Benghazi already had been exhaustively scrutinized and that perfect security can never be achieved, drawing on the various attacks on U.S. diplomatic and military installations overseas during the presidencies of her husband, Bill Clinton, in the 1990s and Ronald Reagan a decade earlier.

(BRADLEY KLAPPER and MATTHEW DALY)