US NewsFormer Sen. Adlai Stevenson III Dies at 90SavePrintIllinois 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 PhotoKatabella Roberts9/8/2021|Updated: 9/8/2021Former 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.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.