The 1984 European Parliament election was the first since the inaugural election of 1979 and the 1981 enlargement of the European Community to include Greece. It was also the last before the accession of Spain and Portugal in 1986.

Quick Facts All 434 seats to the European Parliament 218 seats needed for a majority, Turnout ...

1984 European Parliament election

← 1979 14–17 June 1984 1989 →
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All 434 seats to the European Parliament 218 seats needed for a majority
Turnout	61% 2.0 pp
First party Second party Third party   Leader Rudi Arndt Egon Klepsch Henry Plumb Party SOC EPP ED Leader's seat Germany Germany Cotswolds Last election 113, 27.6% 107, 26.1% 64, 15.6% Seats won 130* 110* 50* Seat change 17 3 14 Percentage 30% 25.3% 11.5% Swing 2.4% 0.8% 4.1%   Fourth party Fifth party Sixth party   Leader Gianni Cervetti Simone Veil Christian de La Malène Party COM ELDR EPD Leader's seat North-West Italy France France Last election 44, 10.7% 40, 9.8% 22, 5.4% Seats won 41 31 29 Seat change 3 9 7 Percentage 9.4% 7.1% 6.7% Swing 1.3% 2.7% 1.3%
* The number of seats was increased from 410 to 434 – so this is a nominal figure
President of the European Parliament before election Piet Dankert SOC President of the European Parliament after election Pierre Pflimlin EPP

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Results showed centre-left and right-wing MEPs profiting at the expense of the far-left and centre-right. The Socialists consolidated their position as the biggest group in the Parliament, and there were notable changes for the smaller groups, with far-right MEPs forming a group and the coalescence of the Green and Regionalist group known as "Rainbow". Overall turnout dropped to 61%. No majority was achieved.

There was no single voting system for all member states; each of them adopted its own method, established by national law.

The United Kingdom used a one-round (first-past-the-post) system of 78 constituencies in England, Wales and Scotland, while in Northern Ireland 3 proportional seats were allocated. Belgium, Ireland and Italy used a proportional system with subdivision of the territory into constituencies. Denmark, France, West Germany, Greece, Luxembourg and the Netherlands used a single national proportional system, although in the case of Denmark Greenland had its own constituency with the allocation of one seat and in the case of West Germany the three seats for the West Berlin area were not directly elected but were chosen by the Berlin House of Representatives, given the particular status of the city.

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