The Jubilee Party has now rescinded its decision to conduct its high-stakes nominations in a single day, and will now hold them on April 21 and 25.
The party’s National Elections Board said it made the decision following an increase in the number of counties that will hold the primaries from 33 to 45.
Board chairman Andrew Musangi also said the Jubilee ballot papers are foolproof.
"If you can produce the Jubilee ballot paper, then you can also produce the Sh100 note," Mr Musangi said the party’s ballot papers.
Secretary-General Raphael Tuju also sought to allay fears of possible rigging in the nominations.
"If you can rig the Jubilee process, please come to me and I’ll pay you money," he said.
Mr Tuju assured aspirants that the process will be free and fair, and that the ballot papers are foolproof.
He said the papers have five security features including different colour codes for the different seats, unique serial numbers and a watermark he said only five people know.
Counties that will conduct nominations on April 21:
2. Elgeyo Marakwet
4. Uasin Gishu
14. West Pokot
22. Taita Taveta
Counties that will conduct nominations on April 25:
8. Tana River
17. Homa Bay