Cahill's running mate Paul Loscocco said last week that Cahill couldn't win, and endorsed Republican Charles Baker. Cahill derided it as a "backroom deal" and says he'll press ahead.
He'll reportedly spend about half of his $2 million campaign war chest on TV ads that will start running this week, and they indicate the Cahill campaign may go negative.
WBUR's Bob Oakes and political analysts Dan Payne and Todd Domke take stock of the latest moves in the race for governor.
This program aired on October 6, 2010.