Spanish Prime Minister Pedro Sanchez's Socialists appeared headed for another setback as a key regional election in Andalusia began on Sunday, a possible dress rehearsal for next year's national vote.

The region is a prime example of the territorial electoral losses suffered by Pedro Sánchez’s Socialists in recent years

Spanish Prime Minister Pedro Sánchez's Socialists seek to avoid a drubbing in the key region of Andalusia on Sunday, following a string of electoral losses ahead of next year's…