France is entering the final stage of campaigning for its 2026 Senate elections, with political parties and local elected representatives preparing for a vote that will renew more than half of the country’s upper house.

The Senate election is scheduled for September 27, with 178 of the 348 Senate seats being contested. Unlike France’s presidential or parliamentary elections, senators are not chosen directly by the general electorate. They are elected through an electoral college made up primarily of local elected officials.

Around 95 percent of the electoral college consists of municipal councillors and their delegates. According to the Interior Ministry, approximately 93,500 “grand electors” are involved in the 2026 Senate election. The system gives local political organisations and municipal networks a particularly important role in determining the composition of the upper chamber.

The September election covers 63 constituencies and will renew 178 seats. Depending on the number of senators being elected in a department, either majority voting or proportional representation is used. Senators serve six-year terms, while half of the Senate is renewed every three years.

The election has attracted considerable attention because it is the final major nationwide electoral contest in France before the 2027 presidential election. Although the Senate vote is conducted through an indirect system and is heavily influenced by local politics, the resulting balance of forces could affect parliamentary politics during the period leading into the presidential campaign.

Political parties have therefore spent the final days before voting attempting to secure support from local elected representatives.

The centre-right Republicans and centrist groups are defending their positions in the Senate, while left-wing parties are seeking to maintain their representation. The National Rally, meanwhile, is seeking a larger presence in the upper chamber.

French political coverage has focused particularly on the possibility of the National Rally establishing a parliamentary group in the Senate. Public Sénat reported that the election could produce changes in the balance among the major political groups, while noting that the indirect voting system and strong influence of local elected officials make the result difficult to determine in advance.

The final days of campaigning have also exposed disagreements within political families.

In several constituencies, competing lists have emerged from parties that share parts of the same political spectrum. Local alliances and personal relationships can play an important role in Senate elections because candidates often have established links with mayors and other local officials.

The Marseille area has been one example of the political competition. Reporting ahead of the vote has highlighted disagreements between different centre-right and centrist candidates, illustrating how local political considerations can shape the Senate contest.

The electoral system means that national opinion polls cannot directly predict the Senate result in the same way they might be used for a direct presidential election. The composition of the electoral college, local alliances and the number of seats being contested in each department all influence the outcome.

The Senate plays an important role in France’s legislative system. Alongside the National Assembly, it examines and votes on legislation, although constitutional mechanisms give the National Assembly the final word in many disagreements between the two chambers.

The Senate also represents France’s territorial communities, making local-government issues an important part of the institution’s political role.

The 2026 election is therefore being watched not only for the individual candidates who win seats but also for possible changes in the composition of parliamentary groups.

The French Interior Ministry has confirmed the electoral timetable and the list of candidates, while preparations are continuing for Sunday’s vote.

Once voting is completed, the new Senate will begin another three-year phase before the next partial renewal. The results will provide a clearer picture of the balance among France’s political groups in the upper chamber as the country moves toward the 2027 presidential election.

For now, the focus remains on the final mobilisation of France’s local elected representatives before they cast their ballots on September 27.