Whitman predicted that her campaign could cost $150 million, much of it coming from her own fortune. (Forbes most recently estimated it at $1.4 billion.)
The Sacramento Bee puts it in context:
That would be approximately double the cost of what Democrats Phil Angelides and Steve Westly spent in the 2006 primary -- combined.
One opponent, Insurance Commissioner Steve Poizner, is a near-billionaire, but might find himself hard-pressed to keep pace with that kind of unprecedented spending.
John Thune might tell you that $150 million could cover pit stops for every American until the year 2023.