The Sam Rainsy Party is preparing for the next elections, but whether or not its leader will join them remains an open question.
The Cambodian government denied the findings of an annual Human Rights Watch report.
Nuon Chea is now awaiting an atrocity crimes trial at the UN-backed Khmer Rouge tribunal.
Anemia is a condition in which the body does not have enough healthy red blood cells, which bring oxygen to body tissues.
Sam Chankea was charged with defamation, in May 2010, after giving an interview to Radio Free Asia on a land dispute case.
The investigation stems from a drunk driving accident that injured three people on a motorcycle.
The rotation of all 26 seats is determined by the amount of money candidates paid during the election campaign in 2008.
The residents of the neighborhood, known as Dey Krahorm, called for Prime Minister Hun Sen to step down from power.
They are charged with atrocity crimes, including genocide, with a trial expected later this year.
Hun Sen was referring to the ongoing social upheaval in the North African country that toppled a longtime authoritarian president.
Arbitration Council President Kong Phallack said the lower number was due to the closure of factories in the wake of the 2008 crisis.
Tribunal spokesman Lars Olsen said the Trial Chamber will consider the request as planning for the trial moves ahead.