There is basically no difference between the two-party system in Britain and America.

Western democratic representative system originated in the Middle Ages. Parliament is actually the representative of the people. In feudal times, he was the institution where people made demands on the king. In modern times, he is an institution that elects government members and makes laws. From this perspective, the modern parliament embodies the concept of "sovereignty belongs to the people". Modern times have evolved into various forms. Generally speaking, there are two kinds of one-room system and two-room system. In addition, according to the different positions held by party leaders, it will be divided into presidential system and cabinet system. Britain has a cabinet system and the United States has a presidential system. Different systems determine what positions they run for in the election. In Britain, it is a constitutional monarchy without a president. Nominally, the king of England is the biggest, and then the government. But as we all know, the government has the final say. So who is the head of government? In Britain, it is called the "Prime Minister". Where did he come from? We know that the modern west and even the whole world are now engaged in "party politics". It is to compete for national leaders by political parties.

In Britain, first of all, a political party with a majority of seats is elected in parliament, which is the so-called ruling party of this government. Those political parties that do not have a majority of seats but can also participate in politics are called opposition parties. Generally, we call them "opposition parties". Because in short, they always say that there is something wrong with the policies of the ruling party, and then they come to power by themselves. Of course, this is a secular statement. Just make this clear. The ruling party wins, and then elects its own party representative (usually the leader) as the prime minister, who will form a cabinet. In this way, the government has been formed, and at least this party can exercise its state rights before losing the next election. Then, if you want to have the final say in Britain, you have to get the right to form a cabinet. The premise is that the landlord said "strive for more parliamentary seats." In America, it's a presidential system. In other words, the president is first elected by the whole people. Of course, these presidents are also representatives of certain parties. After being elected president, the president now organizes the government. There will be people in the government who are not members of the president's party or even independents.

Therefore, in the United States, if you want to have the final say, you should run for president directly, instead of making a big fuss in parliament. This is because in the United States, Montesquieu's theory of "separation of powers" is adopted, that is, the three powers of legislation (parliament), justice (Supreme Court) and administration (presidential government) are separated and mutually restricted. Britain is a model of "social contract theory", that is, a government is elected by the people's representatives (parliament) and then the state rights are exercised instead of the people. Of course, he can also be dismissed when he is incompetent. Britain and the United States have long practiced the "two-party system". Britain is a Labour Party and a Conservative Party, and the United States is a Democratic Party and a Republican Party.