Politico is reporting that "In their largest TV offensive of the midterm cycle so far, both the American Crossroads super PAC and the nonprofit group Crossroads GPS will go on the air in the coming weeks in states including Arkansas, Alaska, North Carolina and Colorado."

"The nonprofit Crossroads GPS, which has not yet mounted a heavy advertising campaign for 2014, will advertise in all four targeted states, spending $3.6 million in North Carolina, $2.3 million in Colorado, $900,000 in Alaska and $875,000 in Arkansas."

"The super PAC arm will spend a total of about $1.8 million in two states, Arkansas and Alaska, with the money split almost evenly between them."

"The sudden escalation of election-year spending by the Crossroads groups is an indication that big GOP donors are increasingly reengaging with unlimited-money outside groups."

Read the full article by Alexander Burns on Politico.