Reading the Polls Without Getting Fooled
Margin of error, likely voters, and house effects — the fine print that separates signal from noise.
A single poll is a snapshot with a lot of fine print. Read it like a professional and you'll be surprised far less often.
The margin of error is bigger than it looks
A poll with a 3-point margin of error means a 2-point lead is a statistical tie. And that margin applies to each candidate, so the gap between them carries roughly double the uncertainty.
Who got asked matters
"Registered voters" and "likely voters" can tell different stories, especially in low-turnout midterms. Late in a race, likely-voter models are usually the ones to watch.
House effects are real
Some pollsters consistently lean a point or two toward one party because of how they weight their samples. That's why averages — not any single poll — are the honest way to read a race.
Trend beats level
One poll is noise. The direction of many polls over time is signal. When you see a number, ask what the average says and which way it's moving.