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Election 2020: How do America's presidential primaries work?
- Iowa caucuses are at risk of becoming obsolete due to recent chaos that may trigger a shift away from the caucus method.
- Presidential selection rules remain volatile, subject to frequent changes across different years, states, and political parties.
- Primary voters are more ideological and engaged than the general electorate, compelling candidates to prioritize their base before moving toward the center.
- The primary calendar is fluid and often shifts as early-voting states gain disproportionate influence.
- The candidate field typically narrows following Super Tuesday, with state polls continuing into the spring or summer.
- Candidates persisting in a close race until July increase the probability of a nominee winning the primary without securing a vote majority.
- In the absence of a majority vote at a convention, multiple rounds of balloting continue until a candidate secures the nomination.
- After the first ballot at a contested convention, delegates are freed from pledge requirements, enabling horse-trading that can displace a frontrunner.
- In 2020, a contested convention theoretically posed a risk of preventing Bernie Sanders or Joe Biden from securing the Democratic nomination.
- If Bernie Sanders leads at the convention but lacks a majority delegate count, he is expected to secure the nomination regardless due to the difficulty of removing a frontrunner from the Milwaukee convention.
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