A Republican from Mills County was selected during a Special Election held Tuesday in southwest Iowa, to fill a legislative seat formerly held by Mark Costello. The Daily NonPareil reports David Sieck, from Glenwood, was elected to Iowa House 23rd District over Steve Adams, a Democrat from Red Oak. Sieck takes over a seat in the statehouse held by Mark Costello, who won a special election Dec. 30 for Iowa Senate District 12, which was held by now U.S. Sen. Joni Ernst. The House District includes Mills and Fremont counties, plus two-thirds of Montgomery County.