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AP U.S. Government and Politics Practice Quiz: Congressional Elections

Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026

Test your understanding with short quizzes. This quiz has 7 questions to check your progress.

Question 1 of 7

Which of the following best describes the incumbency advantage phenomenon in U.S. congressional elections?

All Questions (7)

Which of the following best describes the incumbency advantage phenomenon in U.S. congressional elections?

A) The tendency for challengers to have a significant fundraising lead over current officeholders.

B) The electoral benefit that a candidate from the president's party receives during a midterm election.

C) The structural advantages, such as name recognition and fundraising, that current officeholders have over challengers.

D) The requirement that a candidate must have previously held office to be eligible to run for Congress.

Correct Answer: C

The incumbency advantage refers to the various benefits that help current officeholders win re-election at high rates. These advantages include greater name recognition, easier access to campaign funds, the ability to use the franking privilege for mailings, and a record of providing services to constituents.

A state election law requires that a voter must be a registered member of a political party to vote in that party's election to select a congressional candidate. This is an example of which type of electoral process?

A) A general election

B) An open primary

C) A caucus

D) A closed primary

Correct Answer: D

A closed primary is a primary election in which voting is limited to registered party members. This system prevents members of other parties from crossing over to influence the nomination of an opposing party's candidate.

Which of the following accurately describes a common pattern related to midterm congressional elections?

A) The president's party almost always gains a significant number of seats in both the House and Senate.

B) Voter turnout is typically higher in midterm elections than in presidential elections.

C) The president's party often loses seats in Congress.

D) Third-party candidates experience their greatest success during midterm elections.

Correct Answer: C

A consistent historical trend in U.S. politics is that the party of the sitting president tends to lose congressional seats during midterm elections. These elections are often seen as a referendum on the president's performance during their first two years in office.

Which of the following is a key difference between a caucus and a primary in the congressional nomination process?

A) Caucuses are funded by the federal government, while primaries are funded by states.

B) Caucuses involve in-person meetings and public declarations of support, while primaries typically use secret ballots.

C) Only caucuses can be used to select candidates for the House of Representatives.

D) Primaries are only held in presidential election years, while caucuses are held in midterm years.

Correct Answer: B

The primary distinction is the method of participation. Caucuses are gatherings of party members who meet to discuss and publicly express support for candidates. Primaries are more like traditional elections where voters cast a private, secret ballot.

An independent voter who is not registered with any political party wishes to participate in selecting a Republican candidate for the U.S. House of Representatives. In which of the following electoral contests would they most likely be able to participate?

A) A closed primary

B) A party caucus that is restricted to party members

C) An open primary

D) A presidential general election only

Correct Answer: C

An open primary allows any registered voter, regardless of their party affiliation, to choose which party's primary they want to vote in. This system allows independents and even members of other parties to participate in a party's nomination process.

The incumbency advantage phenomenon has which of the following effects on the composition of the U.S. Congress?

A) It leads to high turnover and a constant influx of new members with fresh perspectives.

B) It results in a more experienced, but potentially less responsive, legislative body.

C) It guarantees that the majority party in Congress will never change.

D) It encourages a larger number of qualified challengers to run for office in each election cycle.

Correct Answer: B

Because incumbents are re-elected at a very high rate, the overall turnover in Congress is relatively low. This leads to a more experienced legislature with continuity in policymaking, but critics argue it can also make members less responsive to the changing will of the electorate and can discourage strong challengers from running.

How might a closed primary system affect an incumbent member of Congress during an election?

A) It makes the incumbent more vulnerable to a challenge from a candidate with strong appeal to independent voters.

B) It forces the incumbent to appeal to the widest possible range of voters, including those from the opposing party.

C) It can make an incumbent who is perceived as too moderate vulnerable to a challenge from a more ideological candidate from within their own party.

D) It eliminates the incumbency advantage by allowing any registered voter to participate.

Correct Answer: C

In a closed primary, only registered party members can vote. This electorate is often more ideologically motivated than the general electorate. Therefore, an incumbent who has a record of compromise or moderation may be more vulnerable to a primary challenge from a candidate who better represents the ideological base of the party.