| Country First
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| Countrywide Financial PAC (Federal)
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| Cowles for Senate
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| Cozen O'Connor PAC (Federal)
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| Cranberry Creek Cranberries Inc (Corporation)
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| Cranston Fire Fighters Local 1363 (Unregistered, Rhode Island)
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| CRASS - Committee Recalling A
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| Crawford Co Democratic Party
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| Credit Suisse First Boston (Federal)
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| Credit Union Legislative Action Council CUNA
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| CREDO
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| Cress Funeral & Cremation (Corporation)
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| CRG Network
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| Crofton for Assembly
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| Cross for Senate
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| Crowley for County Executive (Local-Milwaukee County)
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| CRUE/WEAC Region 4 - PAC (Coulee Region United Educators)
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| Crunch Fitness (Corporation)
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| Crystal Miller for Assembly
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| CTIA - The Wireless Association Political Action Committee (Federal)
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