A series of suicide bombings outside polling stations across the country killed dozens of people, and there are fears of more violence once the results are in. The front-runner is former cricket star Imran Khan -- who ran on an anti-corruption and nationalist platform. His main rival -- Shahbaz Sharif -- is the brother of former Prime Minister Nawaz Sharif. As Mike Armstrong explains, the election results could have wider repercussions for the region.