Part-to-whole
Parliament chart
Every seat of an assembly as one dot, arranged in a half-circle like the chamber and grouped by party, with the majority threshold drawn in.
Every seat in the Bundestag as a dot, grouped by parliamentary group.
Use it when
- The composition of a parliament, council or board
- Asking who can form a majority
- Wholes made of real, countable seats
Avoid it when
- Comparing two groups of similar size precisely: use a bar chart
- The whole is not made of discrete seats
- Chambers of very different sizes compared by raw counts
Display modes
- Default
- Every seat in the Bundestag as a dot, grouped by parliamentary group.
- Annotated
- Draws the majority line (316 of 630) and tests coalitions against it: the chart answers “who can govern?”.
- Comparative
- The 2021 and 2026 parliaments side by side, compared as shares of seats, because the chamber shrank from 735 to 630 seats and raw counts would mix the two changes.