| Swanhorst for Council (Local-Eau Claire)
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| Swedish Match North America LLC (Corporation)
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| Swidler Berlin Shereff Friedman LLP PAC
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| Swigart for Assembly
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| Swisher International (Corporation)
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| Syed for District 12 (Local-Madison, WI)
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| Syngenta (Corporation)
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| Syngenta Corp
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| Szerlong for Assembly
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