Sources say Akhilesh Yadav called Jayant Chaudhary to inform him about the party's decision.
Samajwadi Party chief Akhilesh Yadav has decided to choose ally Jayant Chaudhary as the party's third candidate for Rajya Sabha.
There was speculation earlier that Akhilesh Yadav's wife Dimple Yadav was his likely choice for the upper house of parliament.
After reports yesterday that Dimple Yadav had snagged the slot, Jayant Chaudhary was reportedly upset.
Sources say Akhilesh Yadav called his Rashtriya Lok Dal (RLD) ally this morning to inform him that he was the party's final choice for Rajya Sabha.
On Tuesday, Jayant Chaudhary had reportedly been given the message that he was out of the running for the three Rajya Sabha seats that the Samajwadi Party has from Uttar Pradesh.
Former Congress leader Kapil Sibal and Javed Ali Khan are the other two candidates that the Samajwadi Party is backing.
Sources say Mr Yadav had promised to send Jayant Chaudhary to the Rajya Sabha but they had a disagreement. Mr Yadav wanted him in the upper house under the Samajwadi Party's banner but Mr Chaudhary insisted on going as his own party RLD's candidate with support from the Samajwadi Party.
The Rajya Sabha elections next month will include 11 Uttar Pradesh seats.
Overall, the election for 57 seats, spanning 15 states, will be held on June 10.
The BJP, which recently returned to power in the politically crucial state with a massive win, is set to maintain its dominance in the upper house by occupying around 80 per cent of the total seats.
Uttar Pradesh sends 31 MPs to the upper house; 11 of them are set to retire on July 4. This will include five from the BJP, three from the Samajwadi Party, two from Mayawati's BSP and one from the Congress. At present, the BJP has a strength of 22, while Samajwadi Party has five. The BSP and the Congress have three and one each.
