| LeMahieu for Assembly
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| Lena Taylor for City Judge (Local-Milwaukee, WI)
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| Let's All Keep Electing Republicans - LAKER PAC (Federal Leadership Peter Allen Stauber)
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| Let's Re-Elect Kim Hixson
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| Levanetz for State Senate
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| LGBTQ Victory Fund (Federal)
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| Libertarian National Committee
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| Libertarian Party of Dane County
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| Libertarian Party of Wisconsin
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| Libertarians of Butler County
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| Liberty America Inc (Unregistered)
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| Liberty Mutual Insurance Co PAC
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| Liberty Mutual PAC - Federal
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| Lidhohlm for State Senate
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| Lifted Liquids Inc aka Liquid Made URB (Corporation)
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| Lila Roberts for Assembly
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| Lilliana Amparo for Assembly
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| Limited Brands PAC (Federal)
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| Lincoln Avenue Capital Management (Corporation)
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| Lincoln Co Democratic Party
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