I think he has several backups to fallback on. Irrespective of what they say now, people have known to change stance after voting is over. I would say they have the backup of falling back to atleast 6-7 parties which would get around 10 seats & who are not yet into alliance but might consider once results are out & these include - Trinamool, BSP, DMK, AIADMK, BJD, TRS. On top there would also be smaller parties & independents who might support like MNS , Jaswant Singh if he wins..etc...