Očekuje se da će stranka desnog centra Evropska narodna partija opet biti najveća grupa u novom sastavu EP-a, ali postoje sve veće zabrinutosti da bi radikalne desničarske stranke, male stranke i stranke zasnovane na jednom cilju mogle ostvariti prednost i zauzeti i do skoro jedne četvrtine mjesta.
While the centre-right European People's Party is expected to again be the biggest group in the next EP, there are growing concerns that radical far-right, fringe and single-issue parties could make gains to take up to nearly a quarter of the seats.