As of now, There is more than 75% probability for NDA and MODI as PM gain. No doubt on it.
But the interesting this in this election is, for the opposition parties, bringing down Modi is the most important thing than bringing down NDA. So if the numbers are not keen on any side, any interesting thing can happen.
But Modi and Shah will show all their acumen to retain their positions. But eod its number game. If numbers are varying too much out of their favor, even their friends will drop their support. But if numbers are reasonably favoring them, even their enemies will join hands and that will give them good strength to retain their positions. So, Modi and Shah may see the heat to save their portfolios, and this makes the future tough for appointed people like Arun Jaitley and few others who occupied high positions just because they are puppets or friends of MODI. This can give space to new people who can bring difference of opinion and dissent on table and influence the policy making and govt functioning. Hopefully it should decrease the current autocratic style and dramatics by few people.