<P> Cabinet members do not have much independence to actively disagree with government policy, even for productive reasons . A cabinet member may be forced to resign simply for opposing one aspect of a government's agenda, even though they agreed with the majority of other proposals . Westminster cabinets also have a tendency to be very large . As the cabinet is the chief organ of power and influence in the government, members of parliament may actively lobby for a position in cabinet once their party is elected to power . The Prime Minister, who is also party leader, will have an active interest in promoting as many of these members from their own party as possible . </P> <P> Westminster governments usually do not have a very strong tradition of separation of powers, in practice (apart from the separation between the executive / legislature and the judiciary). Though the head of state, be it governor - general, monarch, or president, will have nominal powers to "check" those of the prime minister, in practice these individuals are usually regarded as little more than figureheads who are expected not to actively intervene in day - to - day politics . Prime ministers under any Westminster system have ample freedom to appoint a large variety of individuals, such as judges, cabinet ministers, and other senior bureaucrats . </P> <P> Nevertheless, prime ministers can usually do only as much as public opinion and the balance of party membership of parliament will let them do . In practice, government in multi-party consociational systems, such as Belgium or the Netherlands, is always made up of coalitions, and prime ministers must keep the coalition partners happy in order to retain their support on votes of confidence . By contrast, in countries with a strong two - party system, such as the United Kingdom and Australia, coalitions rarely occur except when a third party wins an unusually large number of parliamentary seats, or in times of national crisis, when all parties may be represented in the government in order to promote national unity . </P> <P> The threat posed by non-confidence votes is often used to justify extremely well - disciplined legislative parties in Westminster systems . In order to ensure the government always has the confidence of the majority of the house, the political culture of Westminster nations often makes it highly unusual for a legislator to vote against their party . Critics argue this in turn undermines the freedom and importance of Members of Parliament (MPs) in day - to - day legislating, making the cabinet the only organ of government where individual legislators can aspire to influence the decisions of the government . </P>

Are executive functions promoted by the arrangement of commons