DES MOINES — Auditor election contests typically do not excite voters.But the race this year to become Iowa’s state auditor is drawing more interest than typical.The campaign features an incumbent — and, historically, elected statewide officials fare well in Iowa elections — against a well-funded challenger with some high-profile resume entries.Mary Mosiman, a Republican from Ames, has held the office since 2013, when she was appointed to the position.