Complex sentence: The Spanish Socialist Workers' Party (PSOE) remained the largest party overall and in most regional parliaments, but lost 742,000 votes, nearly 10 percentage points and many of the absolute majorities it had obtained four years previously.
Split into simpler sentences: The Spanish Socialist Workers' Party (PSOE) remained the largest party overall, as well as in most regional parliaments. However, it suffered from a drop in popular support which saw it losing many of the absolute majorities it had obtained four years previously.