Section 25. Vacancies in office of Chairman and Vice-Chairman to be filled up.

(1) In the event of a vacancy in the office of the Chairman or Vice-Chairman by reason of death, resignation, removal or otherwise, the vacancy shall subject to the provisions of section 19, be filled as soon as possible by election if elected, or by nomination if nominated of a Chairman or Vice-Chairman. (2) Every Chairman or Vice-Chairman elected or nominated under this section to fill a casual vacancy shall hold office so long only as the Chairman or Vice-Chairman in whose place he is elected or as the case may be, nominated would have held it if the vacancy had not occurred.