Former Pakistani Prime Minister Nawaz Sharif waves as he addresses his supporters during an election campaign meeting in Islamabad on May 5, 2013. A roadside bomb exploded at an election rally in southwest Pakistan on May 5 killing two people, officials said as violence continued ahead of historic polls on Saturday. Pakistan will elect its new government for the next five years in polls on May 11. The election of the national and four provincial assemblies will mark the first time a civilian government has completed a full term and handed over to another, in a country that has been ruled by the military for half its existence.