legislature-dashboard

Dashboard for legislative data, starting with the Czech Lower Chamber (Poslanecká sněmovna) at snemovna.datatimes.cz.

A project by KohoVolit.eu / DataTimes.cz.

Apps

App	URL	Description
apps/cz-psp	snemovna.datatimes.cz	Czech Poslanecká sněmovna 2025–2029
apps/cz-cities	mesta.datatimes.cz	Czech municipal assemblies, including Plasy

Packages

Package	Description
packages/ui	Shared React components — PartyFace, PartyBadge, design tokens
packages/charts	Shared visx charts — SwarmPlot, ScatterPlot
packages/utils	Shared utilities and formatters

Getting started

# Install dependencies
pnpm install

# Run all apps in dev mode
pnpm dev

# Typecheck all packages
pnpm typecheck

# Lint
pnpm lint

# Build
pnpm build

Requires Node.js 20+ and pnpm 9+.

What it shows

For each MP and each party/kraj:

• Účast na hlasování — share of votes the MP attended
• Rebelita — how often the MP votes against their own parliamentary club
• Vládnost — how often the MP votes in line with the government coalition
• Opravy hlasování — number of corrected ("oops") votes
• Ideologické pozice (WPCA) — 2D map of MPs based on voting patterns

Data

Analysis outputs are fetched from michalskop/cz-psp-data-2025-202x via raw GitHub URLs. The data repo runs a nightly GitHub Action that recomputes all analyses from official Poslanecká sněmovna open data.

The site uses Next.js ISR — pages are statically generated at build time and revalidated every hour.

Before adding or copying a vote dashboard, follow the incident lessons and release checks in Vote dashboard performance.

Force data refresh

GET https://snemovna.datatimes.cz/api/revalidate?secret=YOUR_SECRET

Set REVALIDATE_SECRET in Vercel environment variables.

Deployment (Vercel)

Setting	Value
Root directory	apps/cz-psp
Build command	cd ../.. && pnpm build --filter=@legislature/cz-psp
Install command	pnpm install
Output directory	.next

Environment variables:

Variable	Required	Description
REVALIDATE_SECRET	Recommended	Secret token for /api/revalidate

Tech stack

• Framework: Next.js 15 (App Router)
• Styling: Tailwind CSS v4
• Charts: visx
• Monorepo: Turborepo + pnpm workspaces
• Deployment: Vercel

Related repos

• michalskop/cz-psp-data-2025-202x — data source (nightly analyses)
• michalskop/legislature-data-analyses — analysis scripts and methodology
• michalskop/legislature-data-standard — data type schemas