What to Know About Spain’s Election on Sunday

Spaniards will go to the polls on Sunday to vote in an early general election that could see the right return to power and, more crucially, the far right enter the national government for the first time since the Franco dictatorship, nearly a half-century ago.

The outcome will determine whether Spain — a nation of about 48 million people and the European Union’s fourth-largest economy — follows a growing trend in Europe, where hard-right parties are surging in popularity and, in some…