A political campaign can survive FBI raids, indictments of advisers and even indictments of public officials themselves, but timing is everything.The news of the past week includes the indictment of Todd Smith, a top adviser and longtime consultant to Texas Agriculture Commissioner Sid Miller, a Republican. Smith is accused of soliciting bribes for hemp licenses from Miller’s agency.In Laredo, the FBI swarmed the home of U.S. Rep. Henry Cuellar, a Democrat, as part of an unexplained investigation. Cuellar said he’ll cooperate.However those cases come out, the timing is awful for those incumbents. Both Miller and Cuellar have ambitious primary opponents ...