Dr. Doug Butzier, a Libertarian candidate running for Senate in Iowa, died in a plane crash in Dubuque on Monday night.
He died around 11 p.m. about one mile north of Dubuque Regional Airport, according to the local ABC affiliate. He was the pilot and only one aboard the aircraft. The National Transportation Safety Board is investigating the crash of the Piper PA 46-310P, a six-seater, single-engine aircraft.
Dr. Butzier grew up in Cedar Falls and lived in Dubuque working as the medical staff president at Mercy Medical Center, according to his campaign website. He had two sons, and was running against Democratic Rep. Bruce Braley and Republican state Sen. Joni Ernst.
Several high-profile U.S. politicians have died in plane crashes while running for Senate, including Senator Paul Wellstone (D-Minn.), Gov. Mel Carnahan (D-Mo.), Rep. Jerry Litton (D-Mo.) and Virginia GOP chairman Richard Obenshain.