The story

What key constituency group are the presidential candidates fighting over? Soccer moms? NASCAR dads? Perhaps, but if television ad spending habits are any indication, the keys to the White House may be held by Pat Sajak and Vanna White.

Over the course of the campaign, presidential candidates Sens. Hillary Clinton, Barack Obama and John McCain together have spent more than $2 million to air campaign ads on "Wheel of Fortune," the long-running syndicated game show on which Sajak and White are the hosts.

That's more than the three have spent on any other individual television program, according to data from TNS Media Intelligence/Campaign Media Analysis Group or CMAG, CNN's consultant on political ad spending. Read full article »

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