Simplify the following text for a Grade 9 native English-speaking person.
Original: In 2002 he was a candidate for the leadership of the Partij van de Arbeid , but got only two percent of the votes of the party members against sixty percent for the chosen leader Wouter Bos .
Simplified: He almost became faction leader of the Partij van de Arbeid ( the Dutch Labor Party ) , but narrowly lost to Wouter Bos .