Can't wait to see if the media call Barack "Mr. Obama" incessantly if he wins the Presidency...
Yes, they will. It is standard style. The first time the name is mentioned in a story, the title, be it President, Congressman, whathaveyou, is used and and subsequent mention is either Mr., Mrs., or Ms. Prior to this style change, at least 10 if not more years ago, any subsequent mention of the name contained no title of any shape or form, just the last name.