Our MPs and MLAs by definition are elected by us and empowered to rule us. However, most of these personages are chosen (winnability), projected, supported and FUNDED by Political Party.
The Political parties are controlled by its leadership, coterie, dynasty or kitchen cabinet: call it what you will. The party leadership expects these worthies to ensure that its will prevails, by use of Strength of Numbers.
The Party Leadership uses “whip” to keep the flock together, much like the sheep: leave their brains and sensibilities at the door before entering the august houses.
Only your throat is needed inside