Uganda's leading opposition challenger Bobi Wine reacts after voting in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of Wine from monitoring polling stations.(AP Photo/Jerome Delay)

Uganda's leading opposition challenger Bobi Wine leaves the polling station after voting in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of Wine from monitoring polling stations.(AP Photo/Jerome Delay)

Security forces drive past a polling station in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

Ugandans wait to vote in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

Ugandans wait to vote in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

Uganda's leading opposition challenger Bobi Wine, left, and his wife Barbie Kyagulanyi, give a press conference after casting their votes in Kampala, Uganda, Thursday, Jan. 14, 2021. Long lines of Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger Bobi Wine from monitoring polling stations. (AP Photo/Nicholas Bamulanzeki)

Security forces gather in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

Uganda's leading opposition challenger Bobi Wine and his wife, centre, leave the polling station after voting in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of Wine from monitoring polling stations.(AP Photo/Jerome Delay)

Uganda's leading opposition challenger Bobi Wine votes in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of Wine from monitoring polling stations.(AP Photo/Jerome Delay)

Young Ugandans check the voters listings as they wait to vote in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

Ugandans wait to vote in Kampala, Uganda, Thursday, Jan. 14, 2021.Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

Election officials prepare a polling station in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

Security forces gather in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

Ugandans wait to vote in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

A police officer checks voting material at a polling station in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

Ugandans wait to vote in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)

Uganda's leading opposition challenger Bobi Wine makes the sign of the cross after voting in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of Wine from monitoring polling stations.(AP Photo/Jerome Delay)

Uganda's leading opposition challenger Bobi Wine fills his ballot before voting in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of Wine from monitoring polling stations.(AP Photo/Jerome Delay)

Uganda's leading opposition challenger Bobi Wine casts his vote in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of Wine from monitoring polling stations.(AP Photo/Nicholas Bamulanzeki)

Security forces stand outside a polling station in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger Bobi Wine from monitoring polling stations. (AP Photo/Jerome Delay)

Uganda's leading opposition challenger Bobi Wine's wife, Barbie Kyagulanyi, casts her vote in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of Wine from monitoring polling stations.(AP Photo/Nicholas Bamulanzeki)

Uganda's leading opposition challenger Bobi Wine, right, and his wife Barbie Kyagulanyi, in cheerful mood after casting their votes in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of Wine from monitoring polling stations.(AP Photo/Nicholas Bamulanzeki)

Ugandans wait to vote in Kampala, Uganda, Thursday, Jan. 14, 2021. Ugandans are voting in a presidential election tainted by widespread violence that some fear could escalate as security forces try to stop supporters of leading opposition challenger BobiWine from monitoring polling stations.(AP Photo/Jerome Delay)