Head-to-Head Polling Aggregation

Overview

This pillar analyzes head-to-head polling data for specific political races, like a single Senate or House election. It provides a clear, weighted snapshot of voter intent between the actual candidates on the ballot, cutting through the noise of national trends.

What It Does

It aggregates all available public polls for a specific electoral contest. The model then applies a weighting system based on the pollster's historical accuracy, the poll's recency, and its sample size. This process generates a synthesized 'likely voter' spread that represents the current state of the race more accurately than any single poll.

Why It Matters

National political sentiment is often a poor predictor for individual races. This pillar provides a granular, race-specific signal, offering a more precise measure of which candidate is leading and by how much. This is critical for accurately pricing binary or spread-based election markets.

How It Works

First, the system collects all public polls for a given race from reputable sources. It then assigns a quality score to each pollster and applies a time-decay factor, prioritizing recent data. Finally, it computes a weighted average of the candidates' support to produce a single, aggregated polling margin and trendline.

Methodology

Polls are aggregated using a time-decay weighted average. Polls within the last 14 days receive full weight, decaying linearly to zero over 60 days. Each poll's influence is further adjusted by its pollster rating and the square root of its sample size. The final output is a 'Likely Voter' spread with a 95% confidence interval.

Edge & Advantage

This pillar's edge comes from systematically correcting for pollster quality and data recency, providing a more stable and reliable signal than simply averaging raw poll numbers.

Key Indicators

• Weighted Polling Spread

  high

  The aggregated percentage point difference between the two leading candidates after weighting.

• Independent Voter Lean

  high

  The polling trend specifically among voters not affiliated with either major party.

• Undecided Voter Share

  medium

  The percentage of polled voters who remain undecided, indicating potential for volatility.

Data Sources

• FiveThirtyEight

  Provides pollster ratings and a database of national and state-level polls.

• RealClearPolitics (RCP)

  An aggregator of public opinion polls for key political races.

• University Polling Centers

  Direct, high-quality polls from institutions like Quinnipiac, Marist, and Siena College.

Example Questions This Pillar Answers

• → Will the Republican candidate win the 2024 Senate election in Nevada?
• → What will be the final vote margin in the Ohio Senate race?
• → Will the Democrats win the House seat for Pennsylvania's 7th congressional district?

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