Gov. Scott Walker’s speech in Iowa today is one in a flurry of out-of-state appearances that have stoked more talk of a possible presidential run. Jessica Arp of WISC-TV produced a report last night on the situation.

The TV report used some context provided by the Center’s number-crunching: As Walker’s fame has grown, so has his out-of-state donor base.

We’ve posted the WISC report and our interactive visualizations below it.

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