The seven affiliates owned by Allbritton, which also owns Politico, include WJLA in Washington, D.C., and NewsChannel 8, the 24-hour cable news channel that also covers the Washington area.

The Sinclair Broadcast Group announced the deal on Monday. The aggregate price of the purchase is $985 million.

The deal is still subject to approval by the Federal Communications Commission (FCC), but it's anticipated that the sale will get the green light in the last few months of 2013. In order to comply with FCC regulations, Sinclair expects to sell the license and certain parts of some of the stations in Birmingham, Alabama; the Pennsylvania area,; and Charleston, S.C.

Conservative commentator Armstrong Williams has expressed interest in buying some of the stations. He is not affiliated with the Sinclair Broadcast Group.

Williams said he was "definitely planning to pursue the purchase of at least two of the television stations in the deal." Williams said he planned to look into purchasing the channels in Charleston, S.C., and the one in Harrisburg, Pa.

This story was corrected.