| K-12 Management Inc (Corporation)
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| K-Nation Entertainment (Corporation)
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| Kaleka for Congress
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| Kammer Group (Corporation)
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| Kansas City Southern Employees PAC
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| Kapanke for State Senate
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| Kapur & Associates (Corporation)
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| Karalewitz For Waukesha County Clerk (Local-Waukesha County)
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| Karen Hurd for State Assembly
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| Karen Kirsch for Assembly
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| Karst for Assembly
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| Kastel Assembly 96 Committee
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| Kate Brown Committee (Out-of-State: Oregon Governor)
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| Kate for Council (Local-Eau Claire, WI)
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| Kate for Dane (Local-Dane County, WI)
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| Katherine Clark for Congress (Federal Candidate, Massachusetts)
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| Kathy Allen for County Board (Local-La Crosse County)
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| Katie Rosenberg for Wausau (Local-Wausau)
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| Kaufert for Assembly
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| Kaukauna Action Fund
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