Tunisian presidential candidate Nabil Karoui: arrested on money-laundering charges on August 23rd, but the electoral commission has allowed him to compete in the September 15th poll. Photograph: Fethi Belaid

Campaigning ended on Friday in Tunisia’s presidential election before Sunday’s first round of voting, pitting more than two dozen candidates against e(...)

Electoral commission officials at the state office in Yola, Adamawa State, Nigeria, go over the results of the country’s presidential election on Monday. Photograph: Nyancho NwaNri/Reuters

President Muhammadu Buhari took an early lead on Monday in initial official results from Nigeria’s presidential election but the party of his main cha(...)

Microsoft announced on Tuesday that hackers linked to the Russian state tried to target the websites of two conservative think-tanks. Photograph: Carolyn Kaster/AP

The United States government has long believed that the Russian state mounted a concerted digital campaign of interference in the 2016 presidential el(...)