Complex sentence: The Socialist Party may be considered the major defeated of the this election due to a slight lost of mandates, the Socialists did, however, achieve a better percentage of the voting in relation to the election of 2001.
Split into simpler sentences: The Socialist Party may be considered the major defeated party of the this election due to a slight loss of mandates. The Socialists did, however, achieve a better percentage of the vote in relation to the election of 2001.