It could well be because they have already covered Bustamante's and McClintock's platforms. News is just that, its news. If McClintock hasnt said or done something new, why would they report it. The news media is not a propaganda forum for politicians. You actually have to generate NEWS to get news coverage. As the EXPERIENCED and COMPETENT politician, McClintock ought to know that.
I am not sure what your point is. Much of Arnold's recent positioning is an echo of positions he has taken in the past. McClintock doubled his support in the last week; that's not news?