Sen. Roland Burris (D-Ill.) finally got some good news today, when the Sangamon County state's attorney announced that there was "insufficient evidence" to charge him with perjury.

"I am glad that the truth has prevailed," Burris said in a statement.

Of course, this hardly clears the field for Burris if he intends to run for a full term in 2010. State Treasurer Alexi Giannoulias (D) is actively raising money for his campaign. And as has been noted here and elsewhere, the White House has apparently discussed the race with state Attorney General Lisa Madigan. Obama "thinks she would make a great candidate," Robert Gibbs announced from the White House podium.

Madigan has sought to portray herself as independent of the scandals involving former Gov. Rod Blagojevich (D) and others. She played a high-profile role in trying to remove Blago from office when the Senate appointment scandal broke. But as she considers a campaign either for Senate or governor, she'll likely have to deal with another familiar, though controversial name: Rezko.

This Chicago Sun-Times story from 2007 lists Madigan as having received the fifth-most campaign contributions from Tony Rezko, the indicted real estate developer and fundraiser. She received $43,000 from Rezko, just more than her father, state House Speaker Michael Madigan did. She trailed only Blagojevich, former Cook County board president John Stroger, Chicago Mayor Richard Daley, and -- famously, then-Senator Obama.

This is not to imply any wrongdoing. But it likely would come up in any competitive race she enters.