AP® United States Government and Politics review sheet from Aim for Five (aimforfive.com/gov/units/5/5-2)
Unit 5 · Topic 5.2
5.2 Voter Turnout
Whether people vote depends on state election rules, on political efficacy (believing your participation makes a difference) and on demographic factors like age and education. Turnout is much higher in presidential elections than in midterms. When people do vote, party identification, issues and candidate traits shape their choices.
Key terms
- voter turnout
- political efficacy
- voter registration
- voter ID laws
- midterm election
- party identification
Measuring turnout
Voter turnout is the share of eligible people who vote. In presidential elections since 2004, roughly 58 to 67 percent of eligible citizens have voted; 2020 had about 66 percent, the highest in over a century. In midterm elections, when there's no presidential race, turnout has ranged from under 40 percent to about 50 percent in recent decades. U.S. turnout is lower than in many other democracies, some of which, like Australia, require citizens to vote.
Structural factors: the rules
States run elections, so rules vary widely, and rules affect how easy it is to vote:
- Voter registration: most states require you to register before Election Day, sometimes weeks before. Some allow same-day registration, which tends to raise turnout. The National Voter Registration Act of 1993 (“Motor Voter”) lets people register when getting a driver's license. Many states also offer online registration, and some use automatic registration, signing up eligible citizens when they deal with state agencies unless they opt out.
- Voter ID laws: some states require photo ID at the polls. Supporters say ID laws prevent fraud and build confidence in elections; opponents say they make voting harder for people less likely to have ID, such as some elderly, poor or young voters.
- Early and mail voting: many states let people vote before Election Day or by mail, adding convenience.
- Polling access: the hours polls are open, the number of polling places and workers, and absentee-ballot rules vary by state. Long lines and short hours make voting harder.
- Election timing: federal elections fall on a Tuesday in November, a workday for most people, and the U.S. holds many elections, which can cause voter fatigue.
Political efficacy
Political efficacy is the belief that your participation matters. Internal efficacy is believing you understand politics well enough to take part. External efficacy is believing government will respond to people like you. People with high efficacy vote more; people who think “my vote doesn't count” vote less.
Demographic factors
| Factor | Pattern |
|---|---|
| Age | Older citizens vote at much higher rates than young adults |
| Education | People with more education vote more, likely the strongest single predictor |
| Income | Higher-income people vote more |
| Gender | Women have voted at slightly higher rates than men in recent decades |
| Interest and party strength | Strong partisans and people interested in politics vote more |
How voters choose
- Party identification: a person's lasting attachment to a party. It's the strongest predictor of how someone votes.
- Issues: positions on topics like the economy, health care or immigration matter more when a voter cares deeply about them.
- Candidate characteristics: experience, personality, perceived honesty and leadership skills. These matter more for voters with weak party ties.
- Demographics: race, religion, gender, region and education are associated with different voting patterns, though individuals vary.
Worked examples
Try each one yourself first, then open the solution.
- Example 1
Quantitative analysis: turnout by age
Census survey data for the 2020 election show that 51.4% of citizens aged 18–24 voted, compared with 74.5% of citizens 65 and older. Describe the difference, give one explanation, and give one way a state could narrow the gap.
Show the solutionHide the solution
- Step 1: Describe with numbers: turnout among those 65 and older (74.5%) was about 23 percentage points higher than among 18- to 24-year-olds (51.4%), since 74.5 − 51.4 = 23.1.
- Step 2: Explain: young adults move often and must re-register, are less settled in their communities and may have lower political efficacy; older adults have stronger voting habits and a direct stake in programs like Social Security (a life-cycle effect, 4.3).
- Step 3: Policy option: same-day registration or automatic registration would reduce the registration barrier that hits frequent movers hardest.
Answer: Older citizens voted at a rate about 23 points higher. Registration hurdles for frequent movers help explain it, and same-day or automatic registration could narrow the gap.
Common mistakes
- Saying midterm turnout is higher than presidential turnout. It's consistently lower.
- Confusing political efficacy with party identification. Efficacy is belief that participation matters; party ID is loyalty to a party.
- Describing voter ID laws one-sidedly. Present the fraud-prevention argument and the access argument.
On the exam
- Quantitative analysis questions often show turnout by age, education or election type. Describe the pattern with specific numbers, then explain it with a course concept.
- Concept application questions may describe a state law and ask how it would affect turnout.
Connected topics
Videos
Check yourself
5 questions on 5.2 Voter Turnout. Pick an answer to see if you got it, and why.
| Age group | Turnout in presidential election year (%) | Turnout in midterm election year (%) |
|---|---|---|
| 18–29 | 50 | 28 |
| 30–44 | 60 | 40 |
| 45–64 | 70 | 55 |
| 65 and older | 74 | 63 |
Hypothetical turnout data for one state
Which statement is supported by the data?
Which policy would most likely help narrow the turnout gap between the youngest and oldest voters in the table?
A survey asks citizens whether they agree that “people like me don't have any say about what the government does.” Citizens who strongly agree are
| State | Registration rule | Turnout of eligible adults (%) |
|---|---|---|
| A | Register at the polls on election day | 72 |
| B | Register at least 30 days before the election | 60 |
| C | Registered automatically when getting a driver's license | 70 |
| D | Register 30 days before; strict photo ID required to vote | 57 |
Hypothetical turnout in four states in the same presidential election
Which statement is supported by the data?
A reporter claims the table proves that same-day registration causes higher turnout. Which is the strongest response?
0 of 5 answered