"Anyone contesting polls against the official candidate will be expelled for six years with disciplinary action," said Kaptan Singh Solanki, party in-charge and senior leader.
He said the selection was made through a well-laid process and many factors, including winability and popularity, were taken into consideration.
Assembly polls in five states, including Rajasthan, are a semifinal and they will decide the future of party at national level, Solanki said.
He claimed that Vasundhara Raje will become next Chief Minister of Rajasthan whereas Narendra Modi will lead next government at the Centre.