A look ahead to Tuesday’s historic mayoral runoff election and aldermanic races. What you need to know about the measles. Inside Frank Lloyd Wright’s Robie House. And the real Mr. Cub.

• Mayoral, Aldermanic Candidates Try to Close the Deal
• How Will Runoff Election Results Impact Chicago Politics?
• US Sees Second-Highest Number of Measles Cases in Nearly 2 Decades
• Frank Lloyd Wright’s Robie House Reopens After Massive Renovation
• New Biography of Ernie Banks Goes Beyond Legend of Mr. Cub
• Dual Art Show at Intuit Makes Case for Art as Therapy