Congress election campaign committee chief Narayan Rane on Tuesday said alliance partner NCP has demanded the post of chief minister on rotational basis should the alliance come to power.
September 27 is the deadline for filing nominations.
Sources have told CNN-IBN that the Shiv Sena has drawn up a fresh proposal - offering 130 seats to the BJP - agreeing to their demand. Sena has proposed 151 seats for itself and seven seats for other allies, 11 less than what they had offered earlier. One sticking point though is that the Sena wants the Chief Minister's post for Uddhav Thackeray if the alliance wins.
Prime Minister Narendra Modi is present in Bangalore to witness the historic event.
Narayanan also highlighted cyber terrorism as another major security imperative before India.
Around 3.7 lakh people have been affected in the floods.
The robotic explorer successfully slipped into orbit around the red planet on late Sunday night.
The world's biggest software company gave no reason for the delay in the launch which was originally scheduled for September 23.
The jointly-promoted campaign called 'ReachForTheSky' will look to generate awareness about the need to get women online.