A poll in August 2011 found her coalition with only 36% support compared to a rival coalition which had 51%.

TEAM Unity, Genuine Opposition's rival coalition last 2007 Midterm elections.

Some realists maintain that this would be more stable as aggression would appear unattractive and would be averted if there was equilibrium of power between the rival coalitions.

Those elections left the 200-seat Parliament evenly divided between rival coalitions.

Nationalist People's Coalition, Lakas-Laban Coalition's rival coalition in the 1995 midterm elections.

Costs were high because injuries to a male can easily be crippling or fatal, whereas serious injuries to his companion can leave him without an essential partner in combating rival coalitions.

Two former committee co-chairmen, John Hong and Chun Soo Pyun, agreed to work with Mr. Lee, Mr. Kim said, but then set up a rival coalition.

Genuine Opposition, TEAM Unity's rival coalition in the 2007 elections.

If a major transition is under way, many people feel that the outcome will be a more stable two-party system, or at least a system involving two large, rival coalitions.