Members of Israel's largest worker's union the Histadrut (the General Federation of Labor) head to the polls Tuesday to elect a new chairman. Only two candidates are running in the election - current Histadrut Chairman Ofer Eini, who has been head of the union since January 2006 and challenger Leon Benlulu. Election organizers expect 459,581 Histadrut members to cast their legal right at one of more than 1,290 polling stations countrywide. The Histadrut was founded in 1920, to protect the rights of Israel's blue collar workers and is responsible for setting up the Kupat Holim system, initializing pension funds and assisting orphans and widows of workers. At the time of the establishment of the State of Israel, the Histadrut boasted a membership of close to 35 percent of the adult working population. Today, the union's Web site claims that it has 7,000 members. Only those whose membership was renewed in the last three months are eligible to vote.