Prosser vs. Kloppenburg mashup
Justice David Prosser Jr. is being challenged in the April 5 general election by assistant State Attorney General Joanne Kloppenburg. Prosser was appointed to the Wisconsin Supreme Court by Gov. Tommy Thompson in 1998, and elected in 2001.

Outside interests have spent $2.16 million in TV advertising in the state Supreme Court race, according to the Brennan Center for Justice at New York University. The center is tracking advertising for and against Justice David Prosser and Assistant Attorney General JoAnne Kloppenburg.

Spending by third-party groups far outstrips that of the candidates, who are limited by public-finance rules to no more than $300,000.

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Adam Skaggs, counsel at the Brennan Center, said as of Thursday, the liberal Greater Wisconsin Committee was the biggest spender with more than $993,000 on TV ads supporting Kloppenburg. Three conservative groups — Wisconsin Club for Growth, Citizens for a Strong America and Wisconsin Manufacturers and Commerce — together spent more, an estimated $1.16 million, on ads favoring Prosser and attacking Kloppenburg. 

The center plans to post daily updates to the spending totals until Tuesday's election at www.brennancenter.org.

Capital W: Plug in to Wisconsin politics

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