A multiparty system is one where multiple political parties exist and have a chance of leading the government. This is different from the United States where there are two political parties that dominate the political field. These are the Republican and Democratic political parties. Examples of countries that have a multiparty political system are Canada, which has six political parties, and Mexico, which has seven political parties.
There are some common features that generally exist in countries with a multiparty political system. Generally, there is a parliamentary system and representation is proportional. The party that gets the largest share of the votes wins the election. Countries with a multiparty political system tend to have greater voter participation in elections because people can usually identify with at least one political party that shares their views and goals. Some people feel the United States would be better served with a multiparty system. However, it might be even more difficult to reach agreement on issues if multiple parties existed.