There's a lot to play for in this sprawling democratic exercise, so here are the most important matters at hand.
Confused about how this vote works? D'Hondt worry, we've got you covered.
Who gets a vote and what are they voting for? Everything you need to know.
With the big parties under pressure from regional forces, it's hard to see how anyone could form a government on April 28.
Decades of consensus building have enabled the EU27 to show remarkable resilience and flexibility, despite chaos on the UK side
Plans for the Irish border come in to force after Brexit. But there is no plan for the rock after that date.
The ruling offers some relief for Remainers – but don't go thinking this is the end of Brexit.
Left-wing parties in Andalusia were the biggest losers as right-wing parties gained seats in in regional elections in early December.
It's a slippery concept but academics have reached agreement on some of its fundamental elements.
The questions raised by the region's failed bid for independence remain unanswered. And key figures remain in prison.
After 18 years as leader of her party, and 13 as German Chancellor, Angela Merkel has announced that this will be her last term. How has she changed Germany and the world?
A podcast on extremes: from far-right politics, to life in conflict zones and the extreme weather of Australia.
While forming a government will be difficult, this situation was expected and our politics is, above all, practical.
Decades of top-level talks have failed to produce a solution. So why not get citizens involved?
As we try to understand how extreme groups win mass appeal, this organisation offers valuable lessons.
In government with the Five Star Movement, the radical politician's Lega is going from strength to strength.
After a century of debate, Europe still hasn't figured out how to deal with its giant of a neighbour.
Leader of a corrupt party, an unpopular government and a divided country, Mariano Rajoy's days were numbered long ago.
Populism gets a bad rap for fuelling the rise of authoritarianism. But it can also be a shot in the arm for liberal democracy.
Findings suggest parties should rethink the way they chase the 'female vote'.