LAHORE, Pakistan—Pakistani voters go to the polls Wednesday in the country’s second straight democratic transition, with former cricket star Imran Khan poised to lead his party to its best-ever performance—perhaps even good enough to make him prime minister, according to pre-election polls.
The election campaign has been marred by terrorist attacks and allegations the military is working behind the scenes to support Mr. Khan, who has aspired to lead the country for two decades. The military and Mr. Khan’s Pakistan Tehreek-e-Insaf...