A new poll finds Hillary ClintonHillary Diane Rodham ClintonBiden slams Trump over golf gif hitting Clinton Overnight Cybersecurity: Equifax hit by earlier hack | What to know about Kaspersky controversy | Officials review EU-US privacy pact Overnight Tech: Equifax hit by earlier undisclosed hack | Facebook takes heat over Russian ads | Alt-right Twitter rival may lose domain MORE more trusted than congressional Republicans over the Benghazi, Libya, controversy, as GOP lawmakers continue to probe the deadly attack on the U.S. Consulate.

Democratic firm Public Policy Polling found that 49 percent of respondents trust former Secretary of State Clinton, while 39 percent trust congressional Republicans more on the issue.

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The survey was conducted from May 10-12, at the end of a week during which congressional Republicans held hearings and hammered the administration’s response to the terrorist attack, which left four Americans dead.

Sen. Lindsey GrahamLindsey Olin GrahamTop Louisiana health official rips Cassidy over ObamaCare repeal bill Senate Dems hold floor talk-a-thon against latest ObamaCare repeal bill Overnight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions MORE (R-S.C.) this week suggested Clinton be subpoenaed to testify on the attack, and Rep. Darrell Issa (R-Calif.), chairman of the House Oversight Committee, said that responsibility for the attacks lies, if not with Clinton, than with "somebody close" to her.

Many Republicans see the Benghazi attack as a possible early line of offense with which to hammer Clinton ahead of her possible run for president in 2016. And two of her potential Republican opponents — Sens. Marco RubioMarco Antonio RubioOvernight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions Senate passes 0B defense bill Trump bets base will stick with him on immigration MORE (R-Fla.) and Rand PaulRandal (Rand) Howard PaulSenate Dems hold floor talk-a-thon against latest ObamaCare repeal bill Overnight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions Lawmakers grapple with warrantless wiretapping program MORE (R-Ky.) — penned op-eds criticizing the administration's response last week.

Paul was particularly forceful in his op-ed, writing that: "The new evidence we have today — and that continues to mount — suggests that at the very least, Mrs. Clinton should never hold high office again."

But the new poll indicates the issue is not yet catching on with voters. A majority, by a 56-38 split said passing immigration reform was more important than investigating Benghazi. And a majority said passing a bill that requires background checks for gun purchases should be a priority over Benghazi by 52-43 percent.

Sixty-five percent of respondents said they didn't think Benghazi was the biggest political scandal in American history.

And despite GOP attacks, more than half of respondents still view Clinton favorably, by 52-44 percent. More than half of respondents, though, view congressional Republicans unfavorably, at 36-57.

The survey was conducted among 576 voters nationwide and has a 4-point margin of error.