The red wave talk was largely based on historical patterns and high inflation. Not really polls.
In fact, there is precious little polling on individual house races.
And if you look at 538, the numbers they predicted for Republican house seats wasn’t that far off from the actual number.
A more relevant analysis of polling accuracy is the 2020 presidential election. That is more of an apples to apples comparison. Although the national polling numbers were a bit too bullish for Biden, the individual state polls were pretty darn close - by and large.
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