The Electoral Commissioner may adjourn the polling from day to day in any case where polling is interrupted by:
(b) the threat of riot or open violence; or
(c) storm, tempest, flood or an occurrence of a similar kind; or
(e) a fire or the activation of fire safety equipment (such as sprinklers or alarms); or
(i) the safety of voters; or
(ii) difficulties in the physical conduct of the voting.