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Representation · sourced historical data

Women as a share of Congress, 1917–2025

The percentage of House and Senate seats represented by women in every Congress since 1917.

What this chart says

Women account for 28.2% of members in the 119th Congress in the combined CAWP and chamber-history records.

How to read it

Divides CAWP's count of women serving by the total House and Senate seats reported for the corresponding Congress.

Important limits

  • CAWP historical counts generally reflect the conclusion of a Congress, while chamber party tables describe opening election results.
  • The percentage measures descriptive representation, not candidate supply, electoral opportunity, or population parity within demographic subgroups.
The data behind the view

Every plotted value.

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Women as a share of Congress, 1917–2025: source values used by Election.org
YearWomen in Congress
19170.2%
19190.0%
19210.8%
19230.2%
19250.6%
19270.9%
19291.7%
19311.5%
19331.5%
19351.5%
19371.5%
19391.7%
19411.9%
19431.7%
19452.1%
19471.5%
19491.9%
19512.1%
19532.4%
19553.2%
19573.0%
19593.5%
19613.7%
19632.6%
19652.4%
19672.2%
19692.1%
19712.8%
19733.0%
19753.6%
19773.7%
19793.2%
19814.3%
19834.5%
19854.7%
19874.7%
19895.8%
19916.0%
199310.1%
199510.7%
199711.8%
199912.1%
200113.4%
200313.8%
200515.3%
200716.5%
200916.9%
201116.9%
201318.7%
201519.6%
201720.6%
201923.6%
202127.3%
202328.2%
202528.2%