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Who's Paying for All Those Political Ads?

One of the Tea Party organizations, the Tea Party Patriots, said Tuesday it has just received $1 million from an anonymous donor to help get out the vote.

All told, spending on TV ads for the midterm elections is expected to total $3 billion.

CBS News chief investigative correspondent Armen Keteyian reports that because of a Supreme Court ruling earlier this year, you may never who's behind most of those ads.

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