Ahmed Patel has been fielded by the Congress for the August 8 Rajya Sabha elections.
"The state party leadership, along with Congress high command, is responsible for whatever is happening right now. In the coming days, around 20 Congress MLAs would severe ties with the party. Thus, it will be impossible for Ahmed Patel to win the Rajya Sabha elections," Mr Patel said.
"When I met Ahmed bhai recently, I cautioned him about this situation and urged him not to contest the election, as I already saw this coming. I firmly believe that the Congress cannot win the Rajya Sabha seat from Gujarat," said the MLA from Jamnagar (Rural) seat.
"Since there are only two main parties in Gujarat, the BJP is the only option for me if I leave the Congress. I have already had a word with BJP national president Amit Shah and state president Jitubhai Vaghani and conveyed my wish to join the party," Raghavjee Patel said.
Another Congress MLA from Jamnagar, Dharmendrasinh Jadeja, also indicated that he would leave the party.
In the last two days, six Congress MLAs have tendered their resignation. Three of them, including Balwantsinh Rajput, joined the BJP.
Mr Rajput is now pitted against Ahmed Patel. In the 182-member Assembly, the strength of Congress has gone down to 51.
Of the total 11 Rajya Sabha members from Gujarat, the term of three of them -- Smriti Irani and Dilipbhai Pandya (both BJP) and Ahmed Patel (Congress) -- is ending on August 18.