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Dems and GOP burn through $300M in ad spending, concentrate in swing states (Monday’s Trail Mix)

at 08:04 AM ET, 08/13/2012

If you’ve turned on your TV in recent months, what you see largely depends on where you live.

That’s because the presidential candidates and outside groups are concentrating the bulk of their advertising in just six key swing states.

Who’s spending where, and which side is spending more? We take a look in today’s Trail Mix:

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