What special elections can tell us
This special election has national implications not only because it could affect the narrow margin in the House of Representatives. Special election results overall can be predictive of the next regularly scheduled election. But you can’t just look at who wins and who loses; you have to look at which party does better than the baseline partisanship of its district. As I’ve written, there’s a pretty reliable correlation between a party’s average overperformance in special elections and the House popular vote margin in the next election.
According to a weighted average of the 2016 and 2020 presidential election results in the district, New York’s 3rd District is 3 percentage points bluer than the nation as a whole. That means a Suozzi win in the double or high single digits would be a bullish sign for Democrats, and a Pilip win would be a bullish sign for Republicans.
Of course, one special election can’t tell you much of anything. Local factors — such as, in this case, the ghost of Santos — can make them unrepresentative of the national mood. So you’d be wise to throw tonight’s overperformance into an average with all the other special election results from this cycle before drawing any broader conclusions.
Entering tonight, Democrats had overperformed by an average of 7 points in congressional and state legislative special elections since the beginning of 2023. If history is any guide, that’s a sign that Democrats will have a strong 2024 election. On the other hand, The New York Times’s Nate Cohn has convincingly written that special-election electorates are fundamentally different from — and more Democratic than — the electorate that will go to the polls this November.
—Nathaniel Rakich, 538