Tanzanians went to the polls on Wednesday in an election that President Samia Suluhu Hassan is expected to win after candidates from the two leading opposition parties were barred from standing.
In addition to the presidential election, voters will choose members of the country's 400-seat parliament and a president and lawmakers in the semi-autonomous Zanzibar archipelago.
Tanzania's presidential vote is being held without the leading opposition party, Chadema, whose leader Tundu Lissu is on trial for treason, charges he denies.
The electoral commission disqualified Chadema in April after it refused to sign an electoral code of conduct.
The commission also disqualified Luhaga Mpina, the candidate for the second largest opposition party, ACT-Wazalendo, after an objection from the Attorney General, leaving only candidates from minor parties taking on Hassan.
CCM dominance
Hassan's CCM, whose predecessor party led the struggle for independence for mainland Tanzania in the 1950s, has dominated national politics since its founding in 1977.
The election commission says it will announce the results within three days of election day. The polls opened at 0400 GMT and will close at 1300 GMT.
Hassan, whose posters dominate towns and villages, has been traversing the country of around 68 million people.
She has boasted about expanding road and railway networks and increasing power generation capacity. In her next term, she has promised to prioritise hiring more teachers.
Hassan won plaudits after coming to power in 2021 for easing repression of political opponents and censorship that proliferated under her predecessor, John Magufuli, who died in office.
