Arizona Republic:  “Former Rep. J.D. Hayworth is off the air in Phoenix, but questions remain about his blurring of the lines between conservative talk-show host and campaigning politician as he appears to make final preparations to plunge into the primary race against Sen. John McCain.  Although others have traded jobs as broadcasters for jobs as elected officials, media-law experts interviewed this week struggled to point to another example in which a potential candidate so explicitly used a program to target a political rival and, as now appears likely, launch a political campaign against him.”