He sits on the Arizona Corporation Commission. She sits over the Maricopa County Superior Court, as chief presiding judge. Together, they run the world. Well, not quite, but damn close. As top judge, Barbara's taken no prisoners (at least, not where some less-favored colleagues are concerned) and she's earned her reputation as hard-nosed, but fair (at least most of the time). Bill is also a lawyer — in fact, he once served as Chief Presiding Judge of Chandler Municipal Court. No big deal compared with his wife's lofty digs as the big cheese at the county courthouse, but who's comparing? Bill resigned from his judgeship in the mid-'80s to run for political office; the moderate Republican served for many years in the Arizona legislature, and now on the board that regulates power, among other things. Will Mrs. Mundell follow in Mr.'s footsteps? Barbara insists she's not headed for life in public office or, perhaps, a slot as an appellate judge. In fact, she insists to pals that she'll quit public life in about two years, when her time as the chief is up. We hope someone can change her mind.