PNU fared poorly in the parliamentary elections 2007 reaching only 43 seats against nearly 99 for its main rival, the Orange Democratic Movement (ODM).

On February 28, 2008 through a mediation team headed by former UN Secretary-General Kofi Annan, the PNU government reached a deal with the ODM to share power.

[2] It immediately began making waves in Kenya's political scene winning the Kangema and Kajiado North by elections as well as several county council wards.

[3] The outcome sparked a steady flow of defections from politicians across political parties, hoping to win various seats in Kenya's 2013 general elections.

[4][5] In December 2012 Uhuru Kenyatta, TNA's presumed presidential candidate, William Ruto of the URP and several other prominent politicians signed a pre-election deal outlining how the parties would share seats in a coalition government,[6] later forming the Jubilee Alliance, which supported Kenyatta's bid for the presidency.