Author: Andéliton Soares (PhD Candidate, University of Brasília, UnB) Presented at: 19th Political Networks Conference (POLNET 2026), University of Manchester, August 2026
This is the public companion to the POLNET 2026 talk. It contains:
- the slides as presented (
slides/talk_slides.pdf), and - the figures from the paper (
figures/, with an index infigures/README.md).
The working paper (text and appendices) is available from the author, distributed via the event organizer. It is not included here while it is under review.
The analysis code and data will be released as a full replication package together with the journal version of the paper.
How does an increasingly polarized legislature stay governable? Across six legislatures of roll-call voting in the Brazilian Chamber of Deputies (2003 to 2026), the paper reconstructs coordination as bipartite networks of agreement and shows that the chamber organizes by position relative to the executive of the day, not along a fixed ideological axis. Its pragmatic center, the Centrão, is a long-standing governista bloc whose position changed during the 2014 to 2016 crisis: once a disciplined agent of the presidency, it became an autonomous pivot that sits in the largest coordinating community under every government and, net of the president's party, supplies the marginal majority on contested votes. Because the institutional shocks of the period are collinear, the design does not estimate a single causal effect; it eliminates the main observable rivals and reads the structure that survives.
POLNET2026_git/
├── README.md
├── LICENSE <- CC BY 4.0 (slides and figures)
├── CITATION.cff
├── slides/
│ └── talk_slides.pdf <- the presentation deck
└── figures/ <- every figure, in reading order, with an index
The figures are named in reading order (figure_01_... to figure_07_...) plus the appendix
figures (figure_B1_..., figure_F1_..., figure_G1_...). See figures/README.md for what each
one shows and which analysis step produced it.
Soares, A. de O. (2026). Legislative Coordination and Institutional Change: A Bipartite Network Analysis of Coalition Dynamics in the Brazilian Chamber of Deputies. Paper presented at the 19th Political Networks Conference (POLNET 2026), University of Manchester.
Slides and figures: Creative Commons Attribution 4.0 International (CC BY 4.0). See LICENSE.
Andéliton Soares, University of Brasília (UnB). The working paper is available on request.