Two-party system
A two-party system is a party system where two major political parties dominate the government. One of the two parties typically holds a majority in the legislature and is usually referred to as the "majority" or "governing party" while the other is the "minority" or "opposition party". Around the world, the term has different senses. For example, in the United States, Jamaica, and Malta, the sense of "two-party system" describes an arrangement in which all or nearly all elected officials belong to one of the only two major parties, and third parties rarely win any seats in the legislature. In such arrangements, two-party systems are thought to result from various factors like winner-takes-all election rules. In such systems, while chances for third-party candidates winning election to major national office are remote, it is possible for groups within the larger parties, or in opposition to one or both of them, to exert influence on the two major parties. In contrast, in the United Kingdom and Australia and in other parliamentary systems and elsewhere, the term "two-party system" is sometimes used to indicate an arrangement in which two major parties dominate elections but in which there are viable third parties which do win seats in the legislature, and in which the two major parties exert proportionately greater influence than their percentage of votes would suggest.
Bipartisanship
According to political analyst James Fallows in "The Atlantic" (based on a "note from someone with many decades' experience in national politics"), bipartisanship is a phenomenon belonging to a two-party system such as the political system of the United States and does not apply to a parliamentary system (such as Great Britain) since the minority party is not involved in helping write legislation or voting for it. Fallows argues that in a two-party system, the minority party can be obstructionist and thwart the actions of the majority party. However, analyst Anne Applebaum in "The Washington Post" suggested that partisanship had been rampant in the United Kingdom and described it as "a country in which the government and the opposition glower at each other from opposite sides of the House of Commons, in which backbenchers jeer when their opponents speak." Applebaum suggested there was "bipartisanship" in Britain, meaning a coalition in 2010 between the opposing major parties but that it remained to be seen whether the coalition could stay together to solve serious problems such as tackling Britain's financial crisis.