On this edition of Chicago Tonight: The Week in Review with Joel Weisman, low voter turnout for an Illinois primary delivers high impact. Mitt Romney triumphs over Rick Santorum; Jesse Jackson, Jr. steamrolls Debbie Halvorson; Tammy Duckworth defeats Raja Krishnamoorthi; and Adam Kinzinger bests Donald Manzullo. Michael Hogan resigns as president of the University of Illinois. Gov. Pat Quinn and Mayor Rahm Emanuel’s wife, Amy Rule, lead a delegation to Brussels to pitch Chicago to NATO officials. A shakeup at Oak Brook-based McDonald’s as CEO Jim Skinner resigns, setting the stage for the company’s first African-American CEO, Dan Thompson. And in sports, the Blackhawks win 9 of their last 11 to stay in the playoff hunt.

Guests:

- John McCarron, Chicago Tribune

- Mary Ann Ahern, NBC-5 News

- Craig Dellimore, WBBM Newsradio 780 & 105.9FM

- Mark Potash, Chicago Sun-Times

Here is a roundup of Chicago Tonight‘s web stories from this week:

Monday, March 19:

- Santorum & Romney Make Final Push in Illinois

- Chicago Weather

- 2 Music Superstars' Surprise Performance: Yo-Yo Ma & Renée Fleming Visit Local H.S.

- Our Black Year

- Ask Geoffrey

- Wrestling Coach Mike Powell

Tuesday, March 20:

- Illinois Primary

- Chicago in the 21st Century

- Roosevelt University's New Vertical Campus

Wednesday, March 21:

- Analysis of Illinois Primary

- Primary Congressional Winners

- Rick Bayless in Cascabel

- Early Spring's Impact on your Garden

- Photographer Lee Balterman

Thursday, March 22:

- Chicago Police Supt. Garry McCarthy

- The Dangers of Growing Up Black

- Chicago Business News

- Future of Chicago Housing Authority

- Architect Michael Graves

- Viewer Mail: Our Black Year

Friday, March 23:

- Weekend Events Around Town: 3/23-3/25