Parliamentary by-election is the indicator of who wins in the next general election

Why parliamentary by-election is important?
The results of the by-election on parliamentary seats held after '308 general election' will gradually indicate who will win and rule the nation in the next general election.
This is because opposition coalition in parliament has a substantial number of seats after the '308 general election'.
This follows the economic downtrend that affects the livelihood of the people. Prices of goods have gone up resulting the hardship of livelihood that constitute a factor on the choice of candidate during the by-election.
Barring unforeseen circumstances,the trend is believed to have been set and prediction is possible.