In most countries, except states there are several different political parties. The one with the of seats normally forms the government, and the parties which are against the government are called the . Sometimes no single party wins enough seats, and several parties must combine together in a to form a government. The principal ministers in the government form a group called the . The leader of this group, and of the government, is the , Of course, there are many different kinds of parties and governments. A socialist or communist party is often described as . A conservative party on the other hand, is usually said to be . Political situations are always changing. Sometimes in a party or between two parties there is a big argument or deep difference of opinion. This is called a (an) . When, on the other hand, two parties work together, this is sometimes called an .