Campaign spending in the Kentucky Senate race between GOP Sen. Mitch McConnell and Democrat Alison Lundergan Grimes could reach $100 million. LM Otero/AP hide caption

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LM Otero/AP

What Could $100 Million Buy You — Besides Campaign Ads In Kentucky?

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Senate Republican leader Mitch McConnell speaks to supporters Saturday at the Tanglewood Farms Restaurant in Franklin, Ky. McConnell faces Tea Party challenger Matt Bevin and several other lesser-known candidates in Tuesday's GOP primary. Timothy D. Easley/AP hide caption

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Timothy D. Easley/AP