Ms Mostert is a member of the ACDP, and she served in the following positions:
African Christian Democratic Party (ACDP)
Not associated with any constituency offices
5th Candidate at African Christian Democratic Party Provincial Free State Election List 2014 (Election List)
from 22nd April 2014 until 7th May 2014
4th Candidate at African Christian Democratic Party Regional Free State Election List 2014 (Election List)
from 22nd April 2014 until 7th May 2014