As millions of Ugandans prepare to pick the country’s president this week, the stakes could not be higher. The run-up to Thursday’s vote has been marred by restrictions on campaigning, arrests of opposition figures and deadly violence. At least 54 people were killed in November as security forces put down protests by opposition supporters. Longtime President Yoweri Museveni, 76, is facing a strong challenge from popular musician-turned-politician Bobi Wine in his bid to secure a sixth, five-year term in office. Bobi Wine, whose real name is Robert Kyagulanyi Ssentamu, was just four years old when Museveni, a former rebel leader, came to power in 1986. In 2005, Uganda’s ruling-party-dominated parliament removed presidential term limits. And in 2017, lawmakers scrapped the age limit of 75 fo...