United Democratic Alliance has dismissed allegations by DCP that it is planning to rig the Ol Kalou parliamentary by-election.
In a statement on Wednesday, UDA described the claims as 'baseless, alarmist' and unsupported by evidence.
The response comes hours after DCP, associated with former Deputy President Rigathi Gachagua, alleged that UDA had devised an elaborate ballot-switching scheme involving recruited voters, pre-marked ballot papers and bribery.
In a statement early Wednesday, DCP claimed a meeting held at a hotel in Gilgil had brought together a UDA "think tank" that allegedly planned the operation.
The party further alleged that registered voters had been recruited as mobilisers, with each tasked to recruit 20 voters who would allegedly be supplied with pre-marked ballot papers to swap with official ballots inside polling stations before handing the blank ballots to UDA operatives outside in exchange for money.
But in a quick rejoinder letter addressed to IEBC chairperson Erastus Ethekon, UDA Secretary General Hassan Omar dismissed allegations as "delusional and alarming remarks" by Gachagua.
"We have gruelingly read the eight-page epistle... with the mixture of astonishment and pity reserved for a man who mistakes his own shadow for a national conspiracy," Omar wrote.
UDA said Gachagua had presented allegations of Cabinet Secretaries and Principal Secretaries campaigning and bribing voters in Ol Kalou "without a particle of evidence."
"A dramatic list of Cabinet Secretaries and Principal Secretaries allegedly campaigning and bribing in Ol Kalou Constituency has been recklessly referenced," he said.
The ruling party also rejected claims that a secret meeting in Gilgil had been convened to plan electoral malpractice.
It further defended the electoral commission, saying claims that the IEBC would collude in rigging the election were "baseless" and "an insult to the patriotic election officials" conducting the exercise.
"Panic has gripped Gachagua. He ought to realise that life is not premised on an individual's hallucinations," the letter states.
The exchange comes as political tensions remain high ahead of the Ol Kalou parliamentary by-election which will be held on July 16, with both parties trading accusations over the integrity of the poll.
