The cable news channels will go into overtime today as Congress tries to avert a swan dive off the fiscal cliff. In addition to daytime live coverage, there will be a two-hour edition of “Fox Report with Harris Faulkner” from 6-8pmET and a special edition of “The Five” at 8pm. CNN will be in live coverage, as usual most of the day. MSNBC will extend its live coverage in the afternoon until at least 6pm, later if news warrants. CNBC has a special tonight at 8pm, and another tomorrow night at 6pm. Fox Business will be doing live cut-ins at the top of each hour from 6pm-midnight. And if you want uninterrupted cliff negotiations from the House Floor tune in to C-SPAN beginning at 2pmET.