[4] Mariental Rural is traditionally a stronghold of the South West Africa People's Organization (SWAPO) party.
In the 2004 regional election, SWAPO candidate Katrina Hanse received 2,411 of the 4,636 votes cast and became councillor.
[5] The 2015 regional elections were won by Simon Christy Dukeleni of SWAPO with 1,207 votes.
The runner-up and only challenger was Anna Elizabeth de Kock of the Rally for Democracy and Progress with 276 votes.
As in all other constituencies of Hardap, the candidate of the Landless People's Movement (LPM, a new party registered in 2018) won.