Question

when is by election held ​

Answer 1

1) Sudden death of MLA or MP.

2) Resignation of his post .

3) Disqualified for any serious reason.

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Answer 2

Answer:

In most cases these elections occur after the incumbent dies or resigns,

but they also occur when the incumbent becomes ineligible to continue in office (because of a recall, ennoblement criminal conviction or failure to maintain a minimum attendance