Parliamentary elections were held in Nauru on 11 October 2025. It was held alongside a constitutional referendum.
The 19 members of Parliament are elected from eight multi-member constituencies using the Dowdall system, a version of ranked voting; voters rank candidates, with the votes counted as a fraction of one divided by the ranking number (e.g. a candidate ranked second will be scored as ); the candidates with the highest total are elected. There are no political parties, so all candidates run as independents. Informal groups do form in Parliament, but membership is fluid.
Parliament is elected for a three-year term, but can be dissolved earlier. The government, which comprises the President and the Cabinet, must retain the support of a majority in Parliament.
All citizens aged 20 and older are permitted to cast their ballot; once an individual reaches voting age, they are automatically added to the electoral roll. Voting is compulsory in Nauru; individuals who fail to vote without sufficient reasoning are required to pay a fine. Nauruans who provide proof of illness, are in hospital or are not present in the country on election day are excused. However, Nauruans overseas on the polling day have the option to engage in proxy voting, where an individual assigns someone in Nauru to vote on their behalf. The electoral commission provides a mobile voting service for voters hospitalised or unable to go to polling stations due to incapacity, involving polling staff travelling to these individuals to ensure they can cast their ballot.
The 24th Parliament of Nauru was dissolved on 26 September 2025. There were 60 candidates in the subsequent parliamentary election. The election was monitored by the Pacific Islands Forum.
Following the parliamentary election, Marcus Stephen was re-elected speaker, and Isabella Dageago was elected deputy speaker. An indirect presidential election was held on 14 October. Incumbent President David Adeang was re-elected unopposed.