Group Registry

Full registry of all 135 demographic groups — variable codes, categories, and national average partisanship (P), Critical Power (CP), and Swing Power (SP) across 2004–2024.

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Elections Hub

Group-level electoral power across all 50 states and six presidential elections (2004–2024) — CP, SP, and the Key–Campbell classification scalar.

© 2026 EasyStates · Presidential election data compiled from ANES, CPS, and state exit polls. All electoral power indices (CP, SP, V) are original EasyStates research metrics. Not affiliated with any political party or campaign organization.