His announcement followed a visit by Mudavadi and his running mate Jeremiah Kioni at his Kabarak home in the company of the son of the former president, Gideon.
Moi said that Amani which brings together the United Democratic Forum (UDF), KANU and New Ford Kenya was the coalition that would well represent the welfare of Kenyans.
“I am with you fully, you have to be more active and visit areas where we have less support to attract more. You have to be confident because you have numbers and you will win because you have got the numbers,” Moi told the Amani delegation before they embarked on a campaign tour of Baringo County.
The former president urged Mudavadi and his team to seek to de-tribalise the nation as it had stood in the way of development.
“Be mindful of your supporters and I hope you won’t run away after elections. Treat those who support you well; they may not want money, but mean well and Amani coalition should be at the forefront of championing for non-tribalised Kenya,” he added.
Moi said that the Rift Valley had started warming up fast to Amani coalition and expressed confidence that the coalition will sweep all the seats in Baringo County.
He expressed optimism that the March 4 General Election will be peaceful with no repeat of violence as was experienced after the 2007 General Election.
Mudavadi on his part assured Moi that he was ready to face the Coalition for Reform and Democracy and Jubilee Alliance saying that the two coalitions were operating from polarised stand points.
“We are confident that we shall be able to turn things around being a non polarised outfit. We just want to say thank you for accepting to support us,” Mudavadi said.
Other leaders present at the meeting were former MPs Musikari Kombo, Kipruto Kirwa, Nick Salat, George Khaniri, among other aspirants.
Kioni who was earlier this week chosen as Mudavadi’s running mate said that his acceptance of the position was informed by the need to look beyond tribes to foster peace and harmony in the country.
Justice Minister Eugene Wamalwa who was also present said that Western region was now united, after its leaders put behind their differences.
He said that the coalition had strong candidates from all the counties in Western Province who will deliver votes for it.
Mudavadi who completes his five-day campaign of the Rift Valley on Monday, will present his nomination papers to the Independent Electoral and Boundaries Commission (IEBC) on Tuesday.