Democratic super PAC launches $1 million TV, digital ad buy backing U.S. Sen. Tammy Baldwin

Bill Glauber | Milwaukee Journal Sentinel

The election is still a year away but the money keeps pouring in to the race involving Democratic U.S. Sen. Tammy Baldwin.

On Tuesday, a Democratic super PAC launched a $1 million TV and digital ad defending Baldwin. Senate Majority PAC is controlled by allies of Senate Minority Leader Chuck Schumer of New York.

The ad claims that "out of state billionaires are smearing Tammy Baldwin," in order to protect "the rigged system that only works for them."

Last week, two conservative groups launched large ad buys against Baldwin.

More: Outside groups launch new TV ads against U.S. Sen. Tammy Baldwin

State Sen. Leah Vukmir of Brookfield and Delafield businessman Kevin Nicholson are the only announced Republican candidates seeking to take on Baldwin next year.