Casting ballots in 27 countries, voters largely backed centrists in European Parliament elections, but far-right parties made serious inroads in France and Germany.

Partial results made public late Sunday showed that centrist political groups were poised to lose some seats, but still maintain a clear majority of more than 400 seats in the 720-seat assembly.

Even so, the outcome seemed likely to steel the far right as a disruptive force and unsettled the bloc’s mainstream establishment.