Before Gov. Scott Walker announced Act 10, the legislation that weakened public-sector labor unions by limiting collective bargaining to only wage increases, in February 2011, more than 91 percent of contributions to Friends of Scott Walker came from Wisconsin.

Since then, only 38 percent of the money to Walker's campaign war chest has come from Wisconsin.

Use the interactive graphic below to see contribution data since July 2008 by ZIP code and state.

Todd D. Milewski covers Wisconsin Badgers men's hockey and the UW Athletic Department for the Wisconsin State Journal.

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