Obama in Africa Illinois' U.S. Senator Barack Obama has visited Nelson Mandela's prison cell. We'll be joined on the phone by Sun-Times reporter Lynn Sweet, who is in South Africa, travelling with the senator on his journey through the continent.

Chicago Tonight: The Week in Review Democrats bicker at state fair, deportation battle at local church, former alderman Ed Vrdolyak targeted by the feds, downtown condo sales tank, statewide ACT scores on the rise, more than 10,000 public school kids homeless, the Sox get ready for the Twins, and the PGA championship tees off at Medinah. Guests:

Durbin & Obama In a speech before AFSCME today, Sen. Barack Obama, sounding very much like a presidential candidate, blasted the Bush administration for fostering a society in which everyone is out for themselves. Sen. Dick Durbin also addressed the delegates, attacking the Bush administration for its handling of the Iraq war and Hurricane Katrina. Elizabeth Brackett reports.

Chicago Tonight: The Week in Review A heat wave and severe storms batter Chicago, Target balks at big-box ordinance, a new push for a property tax cap, work finally starts on Block 37, Bobbie Steele takes over the Cook County Board, Mayor Daley in a war of words with Rev. Meeks, and the Cubs trade future Hall of Famer Greg Maddux. Guests:

Big Box Consequences Target is threatening to pull out of a south side development if the mayor doesn't veto the "big box" ordinance. Rich Samuels reports on today's developments.

Update on Cardinal George's Health Cardinal Francis received good news from his pathologist today in the wake of his surgery last week. Rich Samuels tells us why the Cardinal's doctors are now calling him a "cancer survivor" rather than a "cancer victim".

City Council Update It's decision day at the Chicago City Council as aldermen vote on the controversial "big box" ordinance. Rich Samuels reports.

City Council Update Rich Samuels reports on some controversial matters coming up in tomorrow's city council meeting, including the big box ordinance and aldermanic raises. News Analysis with Elizabeth Brackett The Emerald Ash Borer has now spread to ash trees in Evanston. Elizabeth Brackett and her panel have the latest news on what's being done to stop the unwelcome insect.

Racetrack Deaths The 18th horse of the racing season has had to be euthanized at Arlington Park. Why are so many horses breaking down? Arlington Park board chairman Richard Duchossois says the track is doing everything in its power to find out. Elizabeth Brackett reports.

Chicago Tonight: The Week in Review Police brutality report finally released, Democratic committeemen select Todd Stroger to replace his ailing dad, Senator Obama visits Iowa, big retailers organize against city wage demands, Oak Park changes stance on plus-size retailer, and the White Sox lose first-place showdown. Guests:

News Analysis with Eddie Arruza Could Senator Barack Obama be a presidential candidate in 2008? He continues to say "no," but there are indications that suggest "maybe." Eddie Arruza and his panelists take a look at the Obama factor and the political climate leading up to the midterm elections. Guests: Melissa Harris Lacewell, Eric Zorn, John Cox John Dean Elizabeth Brackett talks to key Watergate figure John Dean about his latest book, Conservatives Without Conscience.

Cook County Democratic Committee Meeting It's official - Cook County Democratic committeemen elected Todd Stroger to succeed his father on the November ballot. Rich Samuels will bring us up to date on the race for president of the Cook County Board of Commissioners. News Analysis with Elizabeth Brackett Chicago public school students are having historic success, according to the latest test scores. But are the results skewed? Elizabeth Brackett and her panel, including Chicago Public Schools CEO Arne Duncan, take a closer look.

Chicago Tonight: The Week in Review Blue Line chaos, Todd Stroger lines up the votes to replace his dad, Mayor Daley claims he should have known more about city hiring abuses, Sears vice-chairman Alan Lacy steps down, Peoples Energy sold, and Ozzie Guillen secures home field advantage for the World Series. Guests:

News Analysis with Elizabeth Brackett Surprising details about Chicago's 2016 Olympic bid are revealed. Will two separate stadiums for opening and closing ceremonies fly with the International Olympic Committee?

CTA Fire Update Mayor Daley has words of praise for emergency workers and passengers following yesterday's accident on the CTA Blue Line. One day later, both federal and local investigators are trying to figure out what caused the derailment. Christian Farr will have more on the investigation.

Race for Governor Republican candidate for governor Judy Baar Topinka accuses Governor Rod Blagojevich of not following state law when it comes to hiring veterans. Eddie Arruza will report on what each side had to say. News Analysis with Carol Marin DuPage County resident Judy Sirko is one of the growing ranks of what experts call "deep poverty." We'll meet her and talk to the Chicago Tribune reporter who told her story.