owa Attorney General Tom Miller says he will seek a 10th term next year. The Des Moines Register reports 73-year-old Miller, a Democrat, made the announcement Thursday. Miller was initially elected to the statewide office in 1978. Except for a four-year stretch in the early 1990s after he made an unsuccessful run for governor, Miller has been the state’s top prosecutor since, making him the longest serving state attorney general in the country.