Former Sen. Adlai Stevenson III Dies at 90

Illinois Democratic gubernatorial candidate Adlai Stevenson III (L) talks with Sen. Edward Kennedy (R) as they finish a series of appearances in Chicago on Oct. 14, 1982. File/AP Photo

Former Illinois Sen. Adlai Stevenson III, a Democrat, has died at the age of 90, his family has confirmed.

His son Adlai Stevenson IV said the Illinois Democrat had passed away at his North Side home in Chicago on Monday, and added that he had dementia.