Mike Gibilisco's Avatar

Mike Gibilisco

@mgibilisco.bsky.social

Professor and political scientist at Caltech researching and teaching about conflict, political institutions, and connections between models and data. michaelgibilisco.com

578 Followers  |  427 Following  |  181 Posts  |  Joined: 10.07.2023
Posts Following

Posts by Mike Gibilisco (@mgibilisco.bsky.social)

Come work with us! And please tell your students to come work with us!

#polisky #econsky

23.12.2025 16:15 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Abstract: How do voting laws impact elections? We highlight how laws targeting a specific group of citizens can have weak effects on turnout and vote shares but substantial effects on policy platforms. To parse these effects, we analyze a model of electoral competition with endogenous turnout and targeted voting costs. Each party anticipates the direct effect of raising one side’s voting costs: discouraging targeted citizens from voting. Consequently, both platforms shift towards the untargeted group. These platform adjustments mobilize targeted citizens and demobilize the untargeted, muting the net impact on turnout and vote sharesβ€”consistent with scant empirical evidence of these electoral effects. Yet, on policy they also hurt targeted citizens and their aligned party. The targeted group’s size amplifies these effects. Our results address party competition, voter participation, and representation, as well as normative and empirical evaluations of voting laws.

Abstract: How do voting laws impact elections? We highlight how laws targeting a specific group of citizens can have weak effects on turnout and vote shares but substantial effects on policy platforms. To parse these effects, we analyze a model of electoral competition with endogenous turnout and targeted voting costs. Each party anticipates the direct effect of raising one side’s voting costs: discouraging targeted citizens from voting. Consequently, both platforms shift towards the untargeted group. These platform adjustments mobilize targeted citizens and demobilize the untargeted, muting the net impact on turnout and vote sharesβ€”consistent with scant empirical evidence of these electoral effects. Yet, on policy they also hurt targeted citizens and their aligned party. The targeted group’s size amplifies these effects. Our results address party competition, voter participation, and representation, as well as normative and empirical evaluations of voting laws.

Now conditionally accepted at @thejop.bsky.social. Very proud of this paper. Full paper here: shorturl.at/TjEWx

27.11.2025 14:25 β€” πŸ‘ 30    πŸ” 5    πŸ’¬ 2    πŸ“Œ 0

Didn’t the Simpsons already do this?

24.11.2025 01:34 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

After working through second and third derivatives, I am ready to abandon Bayes learning for something with an easier functional form.

11.11.2025 22:57 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image 26.10.2025 02:49 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Cue the john williams's jurassic park theme song

15.10.2025 18:10 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image

Currently in FirstView: In β€œMeasuring the Quality of Answers in Political Q&As with Large Language Models,” @rmichaelalvarez.bsky.social and Jacob Morrier develop an approach for measuring the quality of answers in Q&A sessions using data from the Question Period in the Canadian House of Commons.

07.10.2025 16:35 β€” πŸ‘ 5    πŸ” 2    πŸ’¬ 1    πŸ“Œ 1

These always strike me as strong associations and I’ve always wondered how these observed rates vary by field. Eg: effect of family background of becoming an MD/physician or JD/lawyer?

03.10.2025 01:39 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

If we write papers using LLM generated data, and those papers are then used to create another version of LLMs and then new datasets for new papers, will the process converge? If not, will it be stationary?

01.10.2025 16:58 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Modeling Violent Terrorism as a Tug of War Between Competing Groups Mike Gibilisco, professor of political science, and his co-author seek an understanding of how competing terrorist groups react to one another's violent attacks.

There are social scientists at #Caltech, @caltech.edu! I think they do pretty good research...at least some of the time.

www.caltech.edu/about/news/m...

29.09.2025 21:25 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

This is close to stenography:
β€œAn unnamed source told me all these things [many clearly false] so am repeating them to you”

How is this different than publishing a press release?

08.08.2025 15:20 β€” πŸ‘ 5    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

Next question: does monterey pdf word count pick this up? I dont know if I can sacrifice 1 of my 5 implications for this.

15.07.2025 23:08 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
What Remains of U.S.A.I.D. After DOGE’s Budget Cuts? (Gift Article) The few hundred programs that survived DOGE’s purge reveal the future of foreign aid.

What remains of USAID? Practically nothing ("a shell") and millions will die because of Trump and Musk

22.06.2025 18:10 β€” πŸ‘ 43    πŸ” 26    πŸ’¬ 4    πŸ“Œ 1
Post image

Stand aside \bot here comes \swordcontradict

09.06.2025 21:56 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Screenshot of NSF budget cuts to various programs

Screenshot of NSF budget cuts to various programs

Social, Behavioral, & Economic Sciences is getting hit with a 67.6% cut, worse than other programs within NSF. Funding for archaeologists comes from the division for Behavioral and Cognitive Sciences, which is facing a 77.3% cut.

It appears every post doc program has been 100% cut.

30.05.2025 21:44 β€” πŸ‘ 132    πŸ” 67    πŸ’¬ 6    πŸ“Œ 8

I am looking at NSF's budget request, in awe at the disinvestment in learning anything. nsf-gov-resources.nsf.gov/files/00-NSF...

30.05.2025 22:05 β€” πŸ‘ 75    πŸ” 30    πŸ’¬ 1    πŸ“Œ 3
A screenshot of the number of people involved in NSF activities being reduced from 330,100 to 90,000.

A screenshot of the number of people involved in NSF activities being reduced from 330,100 to 90,000.

TO BE PERFECTLY CLEAR, THE PROPOSED NSF BUDGET CUTS NEARLY A QUARTER OF A MILLION PEOPLE FROM NSF ACTIVITIES. FOR INSTANCE, JOBS.

30.05.2025 23:37 β€” πŸ‘ 659    πŸ” 283    πŸ’¬ 4    πŸ“Œ 11

@caltech.edu and I both agree that international relations needs more theoretical models and fitting those models to data.

25.05.2025 23:19 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Great story. And congrats!

23.05.2025 16:10 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

And everyone takes it seriously. No beer cans in sight!

23.05.2025 16:07 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

To the best of my knowledge, skip day involves seniors planning a series of puzzles and challenges for the rest of the students.

23.05.2025 15:56 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image

Even after 8 years, I don’t fully understand caltech’s skip day, but this is the first year with an inflatable dragon outside my office.

23.05.2025 15:55 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Happy to see that this is now out. The R package associated with the project, IRTM, can now be found on CRAN. Or can you still download it from my github. We'll continue to update it over time. This is a brief thread about what IRTM can do. 🧡 (1/7)

22.05.2025 14:46 β€” πŸ‘ 26    πŸ” 6    πŸ’¬ 2    πŸ“Œ 1

Ha. I enjoy the wake-up emails of code or proofs at 7am

22.05.2025 03:40 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I missed the first year student in the summaries. Just wow.

17.05.2025 18:12 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

This is a neat paper that illustrates the benefits of combining theory with new data. You will find this interesting!

17.05.2025 18:02 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Congrats Brad. Very well deserved. Can’t wait to celebrate at the Wallis pizza party

13.05.2025 18:30 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I am never excited for 9am meeting, but today is dissertation defense day!

09.05.2025 15:56 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Sounds great! Not as great as designing the "whats in your wallet commericials," but still pretty great!

09.05.2025 15:55 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I did not know this! What's on your horizon?

01.05.2025 17:00 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0