Question

in which circumstances are by elections held​

Answer 1

✌✌Hey, mate here is your answer⤵

So, basically after the general elections, if seats remain vacant for some reasons then by-elections are conducted for that constituency. By election is an election that is conducted apart from main election. ... IN ANY SETCUATION IN ANY SEAT ELECTION HELD IN SINGLE ARE SOME MORE THEY CALLED BY ELECTIONS

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@1Angel25

Answer 2

In the same way, the security of an election is unique to the circumstances in which it is conducted. The stakes of any given election are different, even if it is held periodically in the same country, due to the changing forces that shape the national interest and corresponding political agenda.