Three votes by the European Parliament in recent years have exposed deep divisions between EU members from the wealthier west and the previously communist east of the bloc.
EU officials worry that the European elections in a month's time could open the door to a new wave of populist, anti-EU politicians hell-bent on wrecking the bloc's modus operandi. But the populists' success will depend on their ability to work together.
The Fidesz party of firebrand Hungarian Prime Minister Viktor Orban has been suspended from the European People's Party
The European election campaign must not "paralyse" EU efforts to reform asylum rules which have split the bloc since the 2015 migration surge, commissioner Dimitris Avramopoulos says.
EU nationals who have settled in Britain are facing a dilemma as Brexit looms: pack their bags, apply for citizenship or stay put and hope for the best.