KEY POINTS
  • Spain is holding a snap election on April 28.
  • This general election is its third in four years.
  • Socialists are ahead in the polls.
Spanish Prime Minister and presidential candidate for the Spanish Socialist Party (PSOE) Pedro Sanchez waves to supporters during a campaign rally in Alicante on April 20, 2019 ahead of the April 28 general election.

Spain is holding a snap election on April 28 and the vote may throw up some surprising results that could have ramifications for the wider political landscape in Europe.

CNBC explains why the country's latest general election — its third in four years — matters.