Oops! NBC reported this morning that Rep. Steve King, a key Iowa GOP congressman, had endorsed Mitt Romney. Then a little while later, the network took it back, saying on its Web site that in fact Rep. King is backing Fred Thompson.
To NBC’s credit, it didn’t try to hide its error. Its site explains: "Team Romney is in the back of the room looking bewildered. They were all here, leading all the press to conclude that it was an endorsement for Romney."
You can see the progression of updates here.