The IEBC has said ballot papers for governor, senator and woman representative posts will land at 7pm.
The commission announced this via Twitter on Tuesday.
Dubai-based Al Ghurair Printing and Publishing Company was tasked with printing the papers ahead of the August 8 elections.
Chairman Wafula Chebukati said the ballot papers will be delivered on time though the printing of presidential papers has not started.
The US Congress earlier raised concerns about "delayed preparations" and piled pressure for a free and credibe election.
It put forward resolutions including assistance by the state department and USAID where preparations are concerned.
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