She wants to be sure she has a Conservative mojority in place for her Presidency.
Exactly. By keeping this ambiguous, she can be more effective in helping other real Americans to toss the socialists out of our Congress in 2010. I suspect a 2012 Sarah campaign is about a 99% probability, but by avoiding that question, she can keep the focus on our issues and not on allegations about her family or about people who may have met members of her family and neighbors of those people.
Oh, piffle. It's as transparently obvious when Sarah Palin says it, as it is when any other unannounced presidential candidate says it. Nobody in their right mind believes a statement like that... of course it's on her radar screen.