Hillary Clinton’s world was so worried about a Republican investigation of the Benghazi attacks, they sent a message to House Democrats: We need backup. …

So Clinton emissaries launched a back channel campaign, contacting several House Democratic lawmakers and aides to say they’d prefer Democrats participate, according to sources familiar with the conversations. Pelosi’s staff said they have not heard from Clinton’s camp. …

“Republicans are making it clear they plan to use the power of the Benghazi Select Committee to continue to politicize the tragedy that occurred in Benghazi, which is exactly why Democratic participation in the committee is vital,” a Democrat close to Clinton world said. “Inevitably, witnesses ranging from Secretary Clinton to Secretary [John] Kerry will be subpoenaed to testify, and the Democrats appointed to the committee will help restore a level of sanity to the hearings, which would otherwise exist solely as a political witch hunt.”