In June 2013, we had launched Pre Poll Alliances for Lok Sabha elections. Electoral information for the three major alliances is available for last six Lok Sabha elections. Now we can also see alliances for assembly elections. As of now, we have information for UP, Maharashtra, Andhra Pradesh, Madhya Pradesh, Karnataka, Gujarat, Rajasthan, Chhatisgarh and Delhi. Alliance information would be available for all assembly elections in these states since 1990 on the respective election page of state elections or here. We will update alliance information for all major states in the next few days.
There is no official data available on pre poll alliances from Election Commission or any other Government source. The alliance constituents have been decided on the basis of publicly available sources i.e. news reports, analysis etc.
As always, do get back to us with feedback and suggestions on this new feature.