The names of lobbying clients that Sen. Roland W. Burris declared to a state legislative panel do not match those on records he filed over the last decade with Illinois and Chicago agencies, a CQ analysis of the records has found.

The discovery comes as Burris, an Illinois Democrat, is fending off calls for his resignation for failing to fully explain his dealings with impeached former Gov. Rod Blagojevich, who appointed him to succeed President Obama. The Senate Ethics Committee also is looking into discrepancies in his statements to the Illinois House Impeachment Committee.

Majority Whip Richard J. Durbin , a fellow Illinois Democrat, suggested that the Ethics Committee should also probe Burris’ lobbying activities.

“Every day there are more and more revelations about contacts with Blagojevich advisors, efforts at fundraising and omissions from his list of lobbying clients,” Durbin said in a statement from Turkey, where he is on a congressional trip. “These news reports and the public statements by Roland Burris himself are troubling and raise serious questions which need to be looked at very carefully.”

Durbin and Majority Leader Harry Reid , D-Nev., had balked at seating Burris in January as an appointee of Blagojevich until he testified at a Jan. 8 Impeachment Committee hearing on the former governor demanding fundraising or other favors in exchange for the post. Blagojevich was later removed from office, but maintains his innocence in a criminal investigation.

In a Feb. 5 submission to the committee, Burris listed 26 clients dating to 2003.

But the filing contains discrepancies with documents filed with the Illinois Secretary of State’s Office and with the Chicago Board of Ethics. A number of clients are listed only in either the legislative filing or in the agency records.

For example, records with the secretary of state show Burris representing the Council of Independent Tobacco Manufacturers of America from 2003 to 2005 and the Illinois Association of Mortgage Brokers in 2007. But those clients don’t appear in his filing with the Impeachment Committee.

Democratic state Rep. Barbara Flynn Currie, who headed the impeachment committee, said her staff hadn’t had a chance to review his filings yet, but that they would. She said, however, that discrepancies in Burris’ testimony were no reason to disqualify him as a senator.

“I thought we were just looking at loose ends,” Currie said. “For example, the response that I had from Sen. Burris, I thought was just answering a couple of questions for the committee. I had no idea there was a bombshell in there.”

Burris has maintained that he’s done nothing wrong, and asked the public to withhold judgment. Calls to Burris’ lawyer, Timothy W. Wright III, who submitted the declaration to the legislative panel and to Burris’ former lobbying firm, Burris & Lebed Consulting LLC, were not immediately returned.

Sangamon County State’s Attorney John Schmidt, the local prosecutor in Springfield, Ill., where Burris testified, is investigating his statements for possible criminal charges such as perjury.

At the Jan. 8 hearing, state Rep. Jim Durkin, the ranking Republican on the panel, asked Burris specifically whether he had contact with the governor’s brother or several close confidants.