You're definitely right. I guess I didn't read the article very thoroughly.
It's amazing to me how often national news stories mix up the affiliation of US Reps. Janet Hook of the LA Times wrote that my congressman, Sue Myrick, was from South Carolina, ABC News wrote that Peter Deutsch was going to challenge Sen. Bob Graham, and now Istook -- I seem to recall other instances, too, but not specifics. It should be the easiest thing to fact check.