| Party | 1979/ 1981 | 1984/ 1986 | 1989 | 1994/ 1995 | 1999 | 2004/ 2007 |
|---|---|---|---|---|---|---|
| Seats | 434 | 518 | 518 | 626 | 626 | 785 |
| Communist | 48 | 46 | 28 | 33 | 42 | 41 |
| Communist/ Socialist |
0 | 0 | 14 | 0 | 0 | 0 |
| Green | 0 | 0 | 29 | 27 | 47 | 42 |
| Radical | 0 | 20 | 14 | 20 | 0 | 0 |
| Socialist | 125 | 172 | 180 | 217 | 180 | 217 |
| Liberal | 38 | 42 | 49 | 52 | 51 | 103 |
| Conservative | 117 | 118 | 121 | 173 | 233 | 278 |
| Democrats | 63 | 63 | 34 | 54 | 0 | 0 |
| Eurosceptic | 22 | 34 | 22 | 19 | 46 | 68 |
| Rightist | 0 | 16 | 17 | 0 | 0 | 23 |
| Non-affiliated | 21 | 7 | 10 | 31 | 27 | 13 |
Notes on Party names:
Communist= Coalition of the Left (79, 84, 89). Confederal European United Left
(94), European United Left/Nordic Green Left (99, 04)
Communist/Socialist= European United Left (89)
Green= Greens (89, 94), European Federation of Green Parties/European Free
Alliance (99, 04)
Radical= Rainbow Group (84, 89), European Radical Alliance (94)
Socialist= Party of European Socialists
Liberal= Liberals and Democrats (79, 84), European Liberal Democrat and Reform Party (89-99), European Liberal Democrat and Reform Party/European Democratic Party (04)
Conservative= European People's Party (79, 84, 89, 94), European People's
Party/European Democrats (99, 04)
Democrats= European Democrats (79, 84, 89), Union for Europe (94)
Eurosceptics= European Progressive Democrats (79, 84), European Democratic Alliance (89, 94), Europe of Democracies and Diversities (99), Union for a Europe of Nations (99, 04), Independence and Democracy (04)
Rightists= European Right (84, 89), Identity, Tradition, Sovereignty (04)
Non-affiliated= usually rightists or regionalists