IOWA CITY — Politics may be more art than science, but Andy McGuire thinks her scientific and medical experience is the right preparation for being Iowa’s next governor.What’s more, McGuire, a physician, said Monday while campaigning in Iowa City, the issues Iowans are talking about — health care and mental health care, for example — are in her wheelhouse.“As a scientist and someone who has the health care background, I’m about finding out where we are,” she said during an event at Hamburg Inn No.