Is Johnson's Campaign in Trouble?

It looks like George Johnson's campaign may be getting some interesting polling data regarding his primary fight with Dennis Callahan. Johnson's campaign went back on television today, including spots on VH1. VH1 these days trends as a network aimed at middle-aged suburban women, so this choice is interesting. And it leads me to two key questions:

• Is Callahan a lot closer in polling numbers than a lot of us think he is?; and,
  
• Is Johnson having polling problems among middle-aged suburban women in General Election head-to-heads againts potential Republican nominees?
  

Now this could all be part of a planned pre-primary ad buy and all my speculation could be that. But given the fact that it starts two days after Johnson reported twelve times as much cash-on-hand as Callahan, it's just interesting.