Districts to Delegations
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See how state delegations shape the House.

If every state in the model uses the same weight, how does the balance of power in the House change?

Several hand-drawn state delegations feed into one shared weight slider and a semicircular House chamber.
Shared model controls

Choose a year, then change w

Paper benchmark ↗
w = 0.000 · 0%
Use a value from 0 to 1, with up to six decimals.

Switching points will appear after a year loads.

At w = 0, every covered district retains its local plurality winner.

House composition

House seats at this weight

Democratic — seats
Republican — seats
Modeled Democratic Fixed Democratic Modeled Republican Fixed Republican Changed from local winner

All 435 seats are assigned. Lighter party colors mark fixed seats outside the panel; dark-and-gold rings mark modeled seats assigned against their local winner. Positions show composition, not member seating or geography.

Democratic vote —
Covered two-party vote
Republican vote —

Two-party vote shares average the covered districts equally and remain fixed as w changes.

Panel coverage — of 435 seats

Loading the fixed outside-panel assignments…

House across the weight range

See how the House changes

Move w—or choose a point on the line—to see how the Democratic share of all 435 seats changes.

One chart

Loading the seat-share path…

Democratic share of all 435 House seats by statewide weight The step line shows the Democratic share of all 435 seats from w equals zero through one. Outside-panel assignments remain fixed, and a marker identifies the selected weight.

Focused vertical scale will appear after the year loads.