They effect elections as they both have different people and different thoughts and beliefs on how a country should be ran. This effects elections because some people will agree with one party whereas others may agree with the opposite, thus causing competition when it comes to voting in elections
Answer: The two major political parties in the United States and Republican and Democrats. Political parties are usually a group of people who have a common thought or belief that they want to put in action.
They affect elections because people will vote on the person based on their belief, or political parties. Keep in mind that there are other such parties, but the major political parties are the ones that the people usually vote for.