Supporters of Pakistan Tehrik-e-Insaf (PTI) attend an election rally in northwest Pakistan's Peshawar, on April 20, 2013. Campaigns for the next month's elections in Pakistan started as all major parties have finalized their candidates and the election body has started printing of the ballot papers, local media reported on Saturday. (Xinhua/Ahmad Sidique)

Supporters of Pakistan Tehrik-e-Insaf (PTI) attend an election rally in northwest Pakistan's Peshawar, on April 20, 2013. Campaigns for the next month's elections in Pakistan started as all major parties have finalized their candidates and the election body has started printing of the ballot papers, local media reported on Saturday. (Xinhua/Ahmad Sidique)