Soy MP Caleb Kositany has conceded that only Raila Odinga can make Deputy President William Ruto president in 2022.
The DP is holding on strong tides with divisions in Jubilee likely to affect his bid.
But on Tuesday, Kositany, a close ally of the DP, apologised to Raila in Eldoret and pleaded with him to back Ruto.
"We badly wronged Raila Odinga and I ask for forgiveness from him," he said.
The Jubilee MP added: " We really need him to make Ruto president. He still remains Arap Mibei."
Cracks in Jubilee have widened with Rift Valley MPs publicly tasking President Uhuru Kenyatta to openly declare if he still supports Ruto.
At a funeral in Kipkelion in February, Raila warned that Ruto needs him more than ever.
"I really wonder why he chest thumps alot. He needs me more than I need him," he said.