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Do big cities need larger councils?

The DSA and Working Families Party are increasingly active in Democratic primaries and, for cities with nonpartisan ballots, first-round elections. City & State consequently reports that New York City Mayor Zohran Mamdani’s new charter-review commission has been swamped with calls for “open primaries.” Out on the West Coast, however, “open primaries” are producing the same basic results.

I want to suggest that cities like New York and L.A. instead consider increasing the sizes of their councils. Doing so might take some pressure off of Democratic primaries — or what passes for primaries in cities with nonpartisan elections.

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On simulating STV results

My recent report for the Manhattan Institute simulated two forms of proportional representation from the results of the 2025 New York City council election. One reader asked whether we considered STV as well. We did. The question in the age of AI is whether it’s worth the resources: time, money, and evidently water.

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Report: “Understanding How Proportional Representation Might Work in New York City”

John Ketcham and I have a new report out today with the Manhattan Institute. In it, we show that the effective number of electoral parties at the last New York City council election was 3.3. We defend this computation by reference to the seat-product model. Then we simulate two forms of proportional representation: open-list at the borough level, mixed-member PR with a citywide compensation tier of 20 seats.

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Trojan Horse or distraction?

At the Election Law Blog, Rick Pildes describes two rationales for adopting proportional representation (PR) nationally. One of these is anti-gerrymandering. He describes the other as the effort to induce a system of 5-6 political parties. On both, he writes:

There’s another issue to flag about the relationship between these two versions of PR in the rhetoric around reform. I’m concerned that advocates for the second version of PR will draw on the intuitions behind the first version of PR to gain support for the second version. In other words, support for the first version of PR will become a Trojan Horse for the second version.

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