The ''guurti'' worked with rebel leaders to set up a new government, and was incorporated into the governance structure, becoming the Parliament's House of Elders. The government became in essence a "power-sharing coalition of Somaliland's main clans," with seats in the Upper and Lower houses proportionally allocated to clans according to a predetermined formula, although not all clans are satisfied with their representation. In 2002, after several extensions of this interim government, Somaliland transitioned to multi-party democracy. The election was limited to three parties, in an attempt to create ideology based elections rather than clan-based elections. As of December 2014, Somaliland has three political parties: the Peace, Unity, and Development Party, the Justice and Development Party, and Wadani. Under the Somaliland Constitution, a maximum of three political parties at the national level is allowed. The minimum age required to vote is 15.