The documents, which have become a public embarrassment to both parties, are the subject of an ongoing investigation by the Senate Sergeant at Arms.
Manny Miranda, who resigned over the issue Friday from his job handling judicial nominations for Senate Majority Leader Bill Frist, R-Tenn., says the memos reveal evidence of "public corruption by elected officials and staff of the United States Senate."
In a letter to the Senate Ethics Committee, Miranda says he has "knowledge of other still unpublished documents that evidence a violation of the public trust in the judicial confirmation process on the part of Democrat senators on the Senate Judiciary Committee.
"This includes evidence of the direct influencing of the Senate's advice and consent role by the promise of campaign funding and election support in the last mid-term election," Miranda charged.
Senate Democrats allege the documents, 14 of which were published by the Wall Street Journal, were stolen by Republican staffers. Miranda and others close to the issue say the documents were obtained via the committee's computer network through a "computer glitch" making them available for review to anyone with access to the network.