On 16 September 2007, Kibaki announced that he would run as the candidate of a new alliance called the Party of National Unity, which would include a number of parties, including KANU, the Democratic Party, NARC–Kenya, FORD-Kenya, Ford–People and Shirikisho among others.
Pada 16 September 2007, Kibaki mengumumkan bahwa ia akan maju sebagai calon dari aliansi baru yang bernama Partai Persatuan Nasional, yang meliputi sejumlah partai, termasuk KANU, Partai Demokrat, NARC–Kenya, FORD-Kenya, Ford–People, dan Shirikisho.