2004 Luxembourg general election

General elections were held in Luxembourg on 13 June 2004, alongside European Parliament elections. The ruling Christian Social People's Party (CSV) of Prime Minister Jean-Claude Juncker won the election, increasing its number of seats to its highest since before 1989 and its share of the vote to levels not seen since the 1959 election.

As expected, the CSV won a plurality of seats, adding 5 new deputies, and continued as the majority partner in the coalition government. However, the junior partner changed from the liberal Democratic Party (DP), which lost 5 seats, to the Luxembourg Socialist Workers' Party (LSAP), which gained one seat. The Greens also slightly increased their representation, whilst the Alternative Democratic Reform Party (ADR) lost ground.

The election coincided with the 2004 European Parliament election.

By locality
The CSV won pluralities in all four districts; in the previous election, the Democratic Party had won a plurality in Centre. However, the CSV won a better-than-average increase in their vote share in Luxembourg City (of 7.4%) and Centre generally (7.5%), wiping out the DP's advantage and winning 2 deputies in that circonscription alone. The CSV's vote remaining roughly constant across all circonscriptions (in all cases between 35.5% and 38.6%):

The CSV won pluralities across almost all of the country, winning more votes than any other party in 111 of the country's (then) 118 communes. The LSAP won pluralities in five communes in the industrial Red Lands: Differdange, Dudelange, Kayl, Rumelange, Schifflange. The DP won the northern communes of Schieren and Préizerdaul.