CQ reports that Gov. Blagojevich’s pick to fill President-elect Obama’s Senate seat, Roland Burris, may not have filed required lobbying disclosure reports.

Once a lobbying firm registers, it is required to file quarterly reports, even if it has received no payment, until concluding the paperwork requirement with a termination report. Likewise, registered lobbyists are also required to file semiannual reports of their donations to politicians.