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More 2012: Ads going up.

ALASKA: Political Wire: “A video shows Sen. Lisa Murkowski (R-AK) received a less-than-hospitable reception at the Alaska Republican Party Convention as she tried to introduce Sen. John Barrasso (R-WY).”

ARIZONA: “The National Republican Congressional Committee upped its ante behind a new ad it is airing in the special election to replace former Rep. Gabrielle Giffords (D),” Roll Call writes.

The DCCC responds, going after Republican Jesse Kelly.

NORTH DAKOTA: “The DSCC’s spot becomes the first independent expenditure spot of the campaign from a national party committee and was placed specifically to answer an ad being run by Crossroads GPS, a Republican-aligned nonprofit affiliated with the American Crossroads super PAC,” Roll Call writes.

SOUTH CAROLINA: “South Carolina Congressional candidate Chad Prosser, the former director of the state’s Department of Parks, Recreation and Tourism, is up with a new TV ad today,” Roll Call writes.