From Tom Taylor's NOW column...
Chicago – With Christmas over, CBS Radio’s all-news WBBM/WCFS can get back to leading the market (it probably figures). It is indeed #1, 7.0-6.8-6.8. Second is iHeart’s urban AC “V103” WVAZ (6.1-5.8-6.0), and third is Hubbard’s hot AC “Mix” WTMX (4.7-4.2-5.2). Mix certainly isn’t mourning the departure of Christmas music at iHeart’s AC WLIT, now fourth (6.6-13.9-4.7). Tribune’s talk WGN ranks fifth (3.8-3.3-4.2 total week, and third in morning drive). Also recovering from WLIT’s Christmas strategy is CBS Radio’s classic hits WJMK (2.8-2.3-3.3). It pulls ahead of Cumulus’ rival classic hits WLS-FM (2.8-2.8-2.6). CBS country WUSN is likewise happy to see the taillights of Santa’s sleigh (3.0-2.3-2.8). iHeart rival “Big” WEBG hangs around its recent level (1.8-1.7-1.8). Chicago’s leading cume station is hot AC “Mix” at about 2.13 million.