American Crossroads v. Walsh in Montana

Michael Beckel writes at The Huffington Post:

American Crossroads, the conservative super PAC behemoth that slumbered through 2013, is awakening.

In recent days, the group has spent more than $187,000 on negative advertisements targeting Democrats, according to a Center for Public Integrity review of filings with the Federal Election Commission.

Of that sum, about $137,000 went toward television ads critical of John Walsh, the Montana Democrat who will be sworn into office Tuesday to replace Max Baucus, the veteran legislator who the Senate last week confirmed as the next U.S. ambassador to China.

Another $50,000 funded mailings opposing Alex Sink, the Democrat running in the March 11 special election in Florida's 13th Congressional District. Politico has reported that TV ads are also in the works. The seat has been vacant since the death in October of Republican Rep. Bill Young.