Jack’s Newsletter
Political science on electoral systems, state/local politics, and public opinion.
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- Sep 4, 2026
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What role for RCV in the election of Mamdani? (opens the original)
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Back to school! The question has come up in my classrooms and conversations at the ongoing APSA conference. Here are some thoughts.Yes, Brad Lander and Zohran Mamdani concluded a “1-2 deal” that would not have been possible, strictly speaking, without a ranked ballot.Without a ranked ballot, the Lander-Mamdani deal might have looked instead like Lander telling voters who trust him to vote for Mamdani.Yes, it is possible that RCV let Mamdani stay in the race whereas, under the old primary-runoff
“Zombie votes” and legitimacy in presidential nominations (opens the original)
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Yesterday I attempted to contextualize the Democratic National Committee’s potential RCV “ban” on Saturday. The core claim was that the choice might reflect concerns about fragmentation of the 2028 candidate field. Several people reacted and seemed to buy the hypothesis. In the process, they introduced me to the concept of a “zombie vote.” Can RCV help with these? Do they matter?A zombie vote is one that cannot count because the chosen candidate has left the race. RCV’s promise here is to reduce
Why is the DNC considering a “ban” on RCV? (opens the original)
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One piece of big news last week was the Democratic National Committee’s upcoming consideration of a rule to “ban” RCV in presidential primaries. (Technically, the rule would ban consultation of voters’ lower rankings.) The matter will be decided on Saturday. Why is this happening?My aim in this post is to sketch some potential reasons from the perspective of
Can a country do surgery on its own political institutions? (opens the original)
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<img alt="" class="sizing-normal" height="3456" src="https://substackcdn.com/image/fetch/$s_!W_k7!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F11346184-cfff-4692-9caa-ef86ef16006d_460
Data on historic use of STV in U.S. cities (opens the original)
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All original data from More Parties or No Parties are available here. I am still digging up the materials to reproduce the analysis of government spending in Chapter 5.You can use the data to generate figures like these. They did not win friends because they raised questions about the reigning explanation for STV’s repeal (racism, anti-communism).There were two other academic projects to have produced similar data. The most recent was <a href="https://openlibrary.org/b
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