get an affadavit from all aspiring mp's & mla's tht they wl not ask for ministership as & when the party comes to power & it wl be leaderships prerogative. In case they are unhappy about it , they wl resign from the membership of the house they belong to & fight election on their own or join the other party offrng them same but only after resigning from the membership of the house they have been elected to.