Mr. Sika was nominated by Ha'apai 13 constituency MP, Veivosa Taka.
No other nomination was put forward.
Mr. Sika replaces former 'Eua People's Representative and Chairperson of the Whole House Committee, Sunia Fili who did not make it to Parliament in the last November general election.
Semisi Sika was first elected into Parliament in the 2010 election.