Out of 100 civics questions for people applying for U.S. citizenship, question 45 suggests that future citizens have two options and only two options in American politics.
It is a win-win between Republicans and Democrats as the only possible answers gives exposure only to them and no other political party or option, such as participating without being obligated to associate with a party.
Question 45. "What are the two major political parties in the United States?"
Answer: Democratic and Republican.