Now, I find this to be an interesting finding because I found it while doing some proofreading of the dispatch project as part of the MoE. As it happens, you could still hold elected office while serving as election commissioner, just as long as it is as a member of the Local Council or Chair of the Assembly. Considering that we rely on the EC to oversee these elections too, I think that we should restrict their eligibility so that they cannot run for or hold an elected office.

Elections Act
An act establishing elections for office

1. Election Commission

...

(3) The Commissioner may not run for or hold an elected office or hold the office of Delegate, Prime Minister, or Cabinet minister, during their tenure as Commissioner.