Terrorism returns to haunt Spanish polls

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MADRID, Spain (CNN) -- It's a rematch in Spain in Sunday's elections, as the Socialist prime minister, who won an upset victory four years ago in the wake of the Madrid train bombings, faces the conservative challenger.

Socialist Jose Luis Rodriguez Zapatero's first decision upon taking office in 2004 was to pull Spain's troops out of Iraq, upsetting Washington.

But he's been upsetting conservatives in Spain a lot more since then, facing blistering criticism from the opposition leader, Mariano Rajoy, who thought he would be elected prime minister last time.

Zapatero has put Spain in the vanguard of European social policy, legalizing gay marriage and making divorces easier to get. The Roman Catholic Church staged a mass demonstration in Madrid last December, blasting the government policies.

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