An Ulster Unionist Assembly member is standing down after less than a year at Stormont due to stress.
The party said Neil Somerville will be replaced before the end of the month.
The Fermanagh and South Tyrone MLA was co-opted after last year's general election to replace Tom Elliott, who is now MP for the area.
Mr Somerville stepped aside from his Assembly role in November, and yesterday the party confirmed he would not be returning.
Ulster Unionist leader Mike Nesbitt MLA said: "I am very sorry it didn't work out for Neil.
"I was highly impressed with him during the course of the canvas that saw Tom Elliott returned as the MP for Fermanagh and South Tyrone and I look forward to working with him in the constituency in the future."
Mr Somerville is a native of Aughnacloy but lives in Clogher and is married with four children.
He was active in the tourism sector until he took time off.
He has been on the board of Taste Of Tyrone, a private sector organisation which promotes the local hospitality industry, for nine years and chair of it for the past two.