Already there is infighting in Congress now, see news, Parmeshwara supporters want him to be made DYCM, another guy wants his person to be made DyCM. This is the reason why congress lost the plot in Goa, Manipur and Meghalaya as too.many CM and DycM aspirants spoil the show.
As per the law if MLA abstain from voting in floor test they get disqualified by their Parties and as a result the house tally falls. So if 10-12 MLA don't vote the house tally becomes 210 which means BJPneeds just 105.