
** FILE ** Ken Livingstone of the Labor Party (left) was mayor of London when he lost the 2008 election to Boris Johnson (right) of the Conservative Party. (Associated Press)

Israeli Defense Minister Ehud Barak attends a press conference in the Knesset, Israel's parliament, in Jerusalem, Monday, Jan. 17 2011, where he abruptly announced that he was leaving his Labor Party and forming a new parliamentary faction inside the governing coalition. (AP Photo/Bernat Armangue)

Labor Party leader Shelly Yachimovich has helped compile a list of parliamentary candidates known more for their devotion to social causes than to peace activism. (Associated Press)

Labor Party leader Diederik Samsom’s criticism of the EU is more moderate than Mr. Roemer’s and has taken over as torchbearer for the left.

Labor Party leader Diederik Samsom’s criticism of the EU is more moderate than Mr. Roemer’s and has taken over as torchbearer for the left.

Labour Party leader Ed Miliband shakes hands with wellwishers in Birmingham, England, Friday May 4, 2012. Prime Minister David Cameron's Conservative Party took an electoral bruising Friday, suffering widespread losses in local elections as voters punished the leader for biting austerity measures and a stalled economy. Main opposition Labour Party leader Ed Miliband toasted his own party's revival after its ousting from national office in the 2010 national election. By Friday morning it had won control of 22 local authorities and claimed at least 470 new council seats. (AP Photo/PA, Rui Vieira)

Accused Norwegian Anders Behring Breivik gestures April 18, 2012, upon his arrival at a courtroom in Oslo, Norway. Breivik is accused of detonating a bomb in July 2011 outside government headquarters in Oslo, killing eight people, then driving to a nearby resort island and massacring 69 others at a summer youth camp run by the governing Labor Party. (Associated Press/Scanpix Norway)

Accused Norwegian Anders Behring Breivik gestures April 18, 2012, upon his arrival at a courtroom in Oslo, Norway. Breivik is accused of detonating a bomb in July 2011 outside government headquarters in Oslo, killing eight people, then driving to a nearby resort island and massacring 69 others at a summer youth camp run by the governing Labor Party. (Associated Press/Scanpix Norway)

Accused Norwegian Anders Behring Breivik gestures April 18, 2012, upon his arrival at a courtroom in Oslo, Norway. Breivik is accused of detonating a bomb in July 2011 outside government headquarters in Oslo, killing eight people, then driving to a nearby resort island and massacring 69 others at a summer youth camp run by the governing Labor Party. (Associated Press/Scanpix Norway)