Karen Weldin Stewart will stand down as insurance commissioner for Delaware, after losing her vote in the primary contest.
Stewart was first elected to the post in 2008 and was re-elected in 2012. In the primary contest on 13 September she lost the vote to democratic party candidate Trinidad Navarro, who will run for the insurance commissioner role in 2017.
Navarro, who received 54 percent of the vote, will now face Jeffery Cragg, the republican party candidate, in November's general election.
Cragg beat rival republican candidate George Parish in the primary contest, winning 51 percent of the vote.