Who Gets to Vote, and How Votes Become Seats
Who can vote has changed through contested reforms. Voting rights and practical access are different. First-past-the-post and proportional rules can turn the same votes into different seat totals.
What a learner can do afterwards
- Sketch how the franchise widened in one country and name two groups added late
- Work the same set of votes through first-past-the-post and a proportional rule and compare the seat counts
- Name one thing other than the rules that suppresses turnout
1 · Read
The franchise means the right to vote. You have read about gaps between founding ideals and voting rights. Campaigns helped widen the United States franchise in stages. In 1920, the Nineteenth Amendment barred denying the vote because of sex. In 1971, the Twenty-sixth Amendment barred denying citizens aged 18 or older the vote because of age.
The Silent Sentinels were women who picketed the White House for voting rights. Some were arrested and went on hunger strikes in prison. Their protests were part of a wider movement. Some women could already vote before 1920. Racial discrimination still blocked many voters after the amendment.
In a single-seat district, first-past-the-post, or plurality voting, gives the seat to the candidate with the most votes. A majority is more than half. With 20 votes split 8, 7 and 5, the candidate with 8 wins without a majority. The smallest majority of 20 is 11. For any even total, divide by two, then add one to find the smallest majority.
Vote share is party votes/total votes. Simplify fractions by dividing both numbers by the same factor. Percent means out of 100: divide party votes by total votes, then multiply by 100. A proportional rule aims for seat shares close to vote shares. Multiply seats by vote share. With 20 seats and 25 percent, 20 × 25/100 = 5 seats. For 2/3 of a total, divide by 3, then multiply by 2. We use exact whole seats; real systems need rounding and eligibility rules.
Compare five council seats using the same votes. Each of five districts has 6 votes for A and 4 for B. First-past-the-post gives A all 5 seats. Pooling the votes gives A 30 of 50 votes, or 60 percent, and B 40 percent. An exact proportional allocation gives A 5 × 60/100 = 3 seats and B 2. Count district winners for one rule; calculate pooled vote shares for the other.
Having the right to vote does not make voting easy. Long journeys, queues and hours that clash with work can stop eligible voters from voting. Reducing these barriers can help turnout, the share of eligible voters who vote. It does not guarantee higher turnout, because other conditions also matter.
Voting rights and access both matter. First-past-the-post counts district winners; a proportional allocation uses vote shares to distribute seats.
Lesson, questions and flashcards written for this dataset. Voting-method and historical background was studied in Contemporary Mathematics and U.S. History.
Both readings were written for this dataset. The linked video lesson, Does your vote count? The Electoral College explained, is by Christina Greer for TED-Ed.
More to read
Comparing votes and seats
Votes measure support; seats are places in an elected body. To compare allocation rules, keep the votes and total seats fixed.
Imagine six districts, each electing one council member. Every district has 8 votes for A and 4 for B. Under first-past-the-post, A wins all six seats because A has the most votes in every district.
Now pool those same votes for an exact proportional allocation. A has 48 votes and B has 24, making 72 altogether. A has two thirds of the votes; B has one third. Two thirds of six seats is four seats, leaving two for B.
The district rule awards each seat separately. The proportional rule uses the pooled vote shares. Neither calculation requires voters to change their votes.
This example produces whole seats without rounding. Real proportional systems need further rules when a calculated share is fractional. Seat totals also do not, on their own, tell you which parties will agree to form a government.
Rights, access and candidate selection
Ask separate questions about an election: who may vote, whether they can cast a ballot, and how ballots determine the result. A change to one answer need not change the others.
In the United States, the Nineteenth Amendment prohibited denying voting rights because of sex. Some women could vote before it, while racial discrimination continued to block many voters afterwards. The Silent Sentinels' protests were one part of the wider campaign for women's voting rights.
Candidate selection is another question. A direct primary lets voters choose a party's nominee by ballot instead of leaving the choice to convention delegates. That procedure does not automatically remove exclusions. In the segregated South, White primaries excluded Black voters. Where the primary winner was likely to win the general election, exclusion from the primary severely restricted political influence.
Practical access also matters. An eligible voter may have a legal right to vote but be unable to leave work during polling hours. That is an access barrier. Keeping these questions separate helps explain why a legal reform may leave other problems unresolved.
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2 · Watch
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