Medill Reports is an on-line publication, prepared by graduate journalism students at Northwestern University. This article in Medill Reports describes the habit of WTTW-TV to host debates, but to exclude some ballot-listed candidates. On January 17, the TV station, which receives substantial funding from the government, hosted a TV debate for four of the candidates for Mayor of Chicago, although six candidates are on the ballot. The article also mentions that WTTW is being sued for a similar discriminatory policy last year, when it hosted a general election gubernatorial debate and invited only the two major party nominees. Thanks to Christina Tobin for the link.