premise: The newly elected Labor Party leader Amir Peretz reiterated his intention Thursday to pull the party out of Prime Minister Ariel Sharon's coalition government, local newspaper Haaretz reported.
  "We will notify the prime minister that we want to leave. We want to leave... certainly out of a desire to turn the Labor Party into an alternative that intends to take power in the next elections," Peretz said.
  "Amir will discuss with the prime minister an agreed date for an election," said Yuli Tamir, a Labor legislator and Peretz supporter.
  Analysts believe that Labor's leaving will propel the country into political disarray and raise the likelihood of early general elections set for November 2006.
   What caused the Labor party to leave the coalition?
hypothesis: raise the likelihood of early general elections