| LD Rockwell for Senate
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| Leaders for a Better Community (Unregistered, MN)
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| Leaders for a Better Community, Inc
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| Leaders for a Better Community, Inc
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| Leaders Igniting Transformation Action Fund
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| Leadership 2004 PAC (Federal)
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| Leadership 98 (now Leadership 02)
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| Leadership MKE
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| LeadingAge WI PAC (aka WI Homes for the Aging)
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| League of Conservation Voters PAC (Federal)
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| League of Wisconsin Municipalities
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| League of Wisconsin Voters
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| Lebakkens Rent-to-Own (Corporation)
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| Lee Government Relations (Corporation)
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| Lee Plumbing Mechanical Contractors Inc (Corporation)
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| Leeper for Treasurer
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| Lehman for Assembly
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| Leibham Campaign Committee
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| LeMahieu for Assembly
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| Let's Re-Elect Kim Hixson
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