The Vice-President has been in politics for close to three decades.
He is the Wiper Democratic Party leader which has partnered with Mr Raila Odinga’s Orange Democratic Party to form Cord, which made him the running mate.
Mr Musyoka, 60, first became MP when he won the Kitui North by-election in 1985 and was appointed an assistant minister for Works, Housing and Physical Planning.
He was re-elected MP in 1988 and elected Deputy Speaker of the National Assembly. In 1992, he was re-elected MP and appointed Foreign Affairs minister.
He was won the sear again in 1997 and headed the ministries of Education and Human Resources Development and Tourism and Information.
Born on December 21, 1966, the URP leader holds a Bachelor of Science and master’s degree in botany from the University of Nairobi.
Mr Ruto was first a political operative in Kanu, then ODM, and now the URP. He is the party leader of URP, which partnered with Mr Uhuru Kenyatta’s TNA to form the Jubilee Coalition. Mr Ruto served the coalition government as the Agriculture minister before he was moved to Higher Education. He has been the MP for Eldoret North for the past 15 years.
He has considerable business interests in the agriculture and service industries. He is facing charges of crimes against humanity at the International Criminal Court in The Hague for his alleged role in the 2008 post-election violence.
Mr Kioni is the outgoing MP for Ndaragwa and was elected to Parliament in the 2007 General election.
He is Amani Coalition leader Musalia Mudavadi’s running mate.
Before his entry into politics, Mr Kioni ran Ngayu and Associates, a property valuation firm based in Nairobi.
He is one of the MPs who came up with the idea of the United Democratic Forum.
He holds a degree in Lands Economics and a Master of Arts in Housing Administration from the University of Nairobi.
He also has a law degree from the University of Nairobi.
Mr Kioni has also been a member of the Land Arbitration Board.
Ms Winnie Kaburu, 53, is the presidential running mate of Prof James ole Kiyiapi.
The former English teacher is a businesswoman and has been active in Kenya’s private sector for the past 10 years.
The last time she taught English was 25 years ago at Uasin Gishu High School.
She also worked in the defunct Kenya Posts and Telecommunication Corporation for six years before moving into the private sector.
She holds a Bachelor of Arts degree in Political Science and a master’s in Gender and Development from the University of Nairobi.
She’s the chairperson of the Private Sector Forum and the chief executive officer of Envirowaste Management Limited
Mr Osumba is the running mate of Mr Peter Kenneth in the March 4 General Election.
The 33-year-old is a former senior manager at mobile phone company Safaricom.
He holds a degree in Business Management (Marketing) from Moi University, Eldoret.
He is also a chartered accountant. He chairs the board of Youth Employment Systems - a nonprofit organisation.
Born in Kibera in a family of six, Mr Osumba won a scholarship to study at Starehe Boys Centre. He once worked at Co-operative Bank as the sales team leader.
He is the chairman of the Old Stareheian Society, a club of the alumni from Starehe Boys Centre. His goal, he says, is to ensure continuity of the Starehe heritage.
Mr Augustine Loile Chemonges Lotodo, 42, is the running mate of Ms Martha Karua.
The son of former Kanu MP Francis Lotodo, the younger Lotodo has served in the East Africa Legislative Assembly, having been picked to the regional assembly by Ms Karua’s Narc Kenya.
He brings to Mr Karua’s campaign the regional experience that will be key for any President keen on the East Africa Community.
His stint in EALA gave him huge experience in negotiating with lawmakers from different backgrounds and cultures.
He is a former board member of the Lake Victoria North Water Services Board.