The below graph shows how twitter mentioned about rahul,arvind kejriwal and modi.
Rahul peaked when he gave the infamous interview to Arnab.
Arivind kejriwal peaked when he resigned as CM.
As you can see, his popularity went down from that point. It seems their biggest mistake was resignation in Delhi which has cost them dearly.
Another inference is that modi's popularity soared right after Kejriwal's popularity fell.
In another words, AAP supporters just jumped to Modi right after his protest in Rail Bhavan and his resignation.
Another graph which shows the Geo tweets i.e. location from where they were tweeted. It seems BJP has more tweets than votes in Kerala, West Bengal and Chennai :)
Same case with AAP too.