ClaimsNate Silver

“a Trump sweep of the swing states was actually our most common scenario, occurring in 20 percent of simulations.”

Nate Silver, author of Silver Bulletin 7 November 2024 The model exactly predicted the most likely election map (Silver Bulletin) archived copy

Factual Their own work or organisation

In Silver Bulletin's final model, a Trump sweep of the seven swing states was the most common scenario, occurring in 20 percent of simulations.

Resolved true The record shows it happened or was so.

Factual: Statements about the present or the past, checked against the record: did they hold up?

The second judge would not resolve this claim; the verdict shown is the first judge's.

What would count as true or false

True if Silver Bulletin's final 2024 presidential model output shows that a Trump win in all seven swing states (Arizona, Georgia, Michigan, Nevada, North Carolina, Pennsylvania, Wisconsin) was the single most frequent swing-state outcome among its simulations and occurred in about 20 percent of them (19–21%). Mostly true if it was the most common scenario and its frequency was 17–23%. Mixed if the frequency is about right but it was not the single most common scenario (e.g. tied with or just behind a Harris sweep), or if it was the most common but at a frequency well off 20% (more than 3 points away). Mostly false if it was neither the most common nor near 20%, but was still among the more common outcomes. False if the model's output shows it was a rare scenario or the figures contradict the claim outright.

Set before the research began.

Evidence (3)

  1. E1 How did the polls do in 2024? It’s complicated. Silver Bulletin · 17 February 2025 Own record

    “Because probabilistic election models do this, that’s one advantage they have over simple polling averages — in fact, Trump sweeping all seven closely contested swing states was the most likely outcome in our model5.”
  2. E2 How did the polls do in 2024? It’s complicated. Silver Bulletin · 17 February 2025 Own record

    “And Harris sweeping all seven states was the next-most likely outcome in our model.”
  3. E3 Polling didn't miss much in 2024, says Nate Silver Newsweek · 19 November 2024

    “According to Silver's forecast, there was a 20 percent likelihood of Trump winning every swing state and a 14 percent chance of Harris winning every swing state.”

Reasoning

Newsweek reports that Silver's forecast gave a Trump sweep of every swing state a 20 percent likelihood and a Harris sweep 14 percent (E3). Silver Bulletin's own post-election review says the Trump sweep was the most likely outcome in its model and the Harris sweep came next (E1, E2). Together these show the Trump sweep was the single most common scenario at about 20 percent, which meets the criteria for true.

Cite this claim

Nate Silver, “In Silver Bulletin's final model, a Trump sweep of the seven swing states was the most common scenario, occurring in 20 percent of simulations.” (said 7 November 2024). Verdict: resolved true. Reliability API, claim c_f56643b5c8cf, method 0.1.0+28da144b, dataset release v1.1.2. https://epistacklabs.com/claims/c_f56643b5c8cf

This claim is in dataset release v1.1.2, with the same verdict.

Reply to this claim

For Nate Silver, or someone speaking for them: a correction or counter-evidence. Replies are read before anything is shown; an approved reply shows your name, role, date, statement and link. Your email address is never shown and is deleted 30 days after the decision (privacy).

More factual claims by Nate Silver

  1. Resolved true Factual 13 August 2024
    “Part of why I've moved the model back to the newsletter, where the probabilities are paywalled, technically”

    Nate Silver has moved his election forecast model back to his Silver Bulletin newsletter, where the probabilities are technically paywalled.

  2. Mostly true Factual 11 September 2023
    “launching FiveThirtyEight was basically my fourth career after management consulting, professional poker, and baseball analytics.”

    Nate Silver said launching FiveThirtyEight was basically his fourth career, after management consulting, professional poker, and baseball analytics.

  3. Resolved true Factual 11 September 2023
    “I’ve turned on the option for paid subscriptions.”

    Nate Silver turned on paid subscriptions for the Silver Bulletin newsletter by 11 September 2023.

  4. Mostly true Factual 8 June 2021
    “Overall we were quite happy and the forecasts were largely accurate and well-calibrated despite a bad year for the polls.”

    The 2020 election forecasts by Nate Silver's team were largely accurate and well-calibrated despite a bad year for the polls.

  5. Resolved true Factual 23 September 2019
    “Too soon for a "this held up well" but looks better after Sanders polled at just 11% in the highest-quality poll of Iowa this weekend.”

    Bernie Sanders polled at 11% in the highest-quality poll of Iowa released the weekend of 2019-09-21/22.

All of them

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