He said the result is worth celebrating since it has liberated Ukambani residents from the chains of the bad leadership that has stagnated the region's development.
"Machakos residents have demonstrated that they are tired with politics of sycophancy, ethnicity, and propaganda."
He said: "The victory today is just the beginning. We have started the journey to State House in 2022."
"The presidency will come to Machakos immediately Uhuru Kenyatta is done with his second term," Mutua said.
The governor, who defended his seat through the Maendeleo Chap Chap party, accused Kalonzo of staging arsenals to remove him from office.
He told journalists, during his victory address at the county headquarters, that the campaign was based on the fruits of his administration's labor.
"I did not give even a shilling to electorates during my campaigns. Everybody in the county know that I did not bribe for votes," said Mutua.
He said politicians should not bribe to rise to power.
"Machakos residents have demonstrated they cannot vote anti-development leaders," he added.
"This has been the best managed election in Kenya since independence. It mirrors what happens in Europe."
Mutua said Kenyans should learn conceding defeat once beaten in polls.
"We need to create a culture of conceding defeat once beaten in elections. This nation is greater than all leaders," Mutua said on Wednesday.
But Ndeti, citing massive malpractices, said she will explore all possible avenues to challenge the results.
"We are not accepting the results because we know what happened on the ground. The exercise was marred by serious election malpractices."
"This is not a banana republic. It is not over as far as we are concerned," Ndeti said insisting that she won the race.
By press time, Mutua was leading with 239,668 votes while Ndeti had garnered 207,000 votes in 1280 out of 1332 polling stations.
-The Star|GEORGE OWITI