Most Americans agree with the decision by House leaders to form a special committee to investigate the deadly attacks on U.S. facilities in Benghazi, Libya, according to a new Washington Post-ABC News poll.

The poll's findings, which show that some 51 percent of Americans approve of continued investigation, comes after congressional Democrats, former Secretary of State Hillary Clinton and various White House allies have questioned the panel's usefulness.

The poll showing support for the special committee includes 72 percent of Republicans, 31 percent of Democrats and 52 percent of self-identified political independents, the Washington Post's Aaron Blake reported.

And there’s a simple reason for why Americans support further investigation: They don’t believe all questions have been answered.

“In fact, the number of Americans who think the Obama administration has covered things up (58 percent) is even larger than the number who want the investigation (51 percent). Americans say 58 [percent] to 32 percent that Obama has covered things up rather than being honest about what happened,” Blake added.

“Previous polling has shown support for the new investigation is even higher, so the totality of the polls suggests that the new probe has a mandate from the American people.”

That's not good news for Democrats who have scoffed at the GOP-led probe.

Before announcing that five House Democrats would participate in the special committee, which is being led by former federal prosecutor Rep. Trey Gowdy, R-S.C., Rep. Nancy Pelosi, D-Calif., admitted that she didn't quite understand the point of the investigation.

“I could have argued this either way,” she said.

One Democrat who's been tapped to join, Rep. Adam Schiff, D-Calif., had previously called it a “colossal waste of time.”

Clinton, who headed the State Department at the time of the Sept. 11, 2012, attacks, said in May that she doesn't think that the panel is necessary.

“[D]espite all of the hearings, all of the information that has been provided, some choose not to be satisfied and choose to continue to move forward,” Clinton said during an interview with ABC News' Robin Roberts. “That’s their choice. And I do not believe there is any reason for it to continue in this way, but they get to call the shots in the Congress.”

But the poll also found widespread disagreement with Clinton, with roughly 50 percent of respondents disapproving of her handling of the situation, versus only 37 percent who approved.

The May 29 to June 1 poll of 1,002 adults had a margin of error of plus or minus 3.5 percentage points.