For more than three decades, Vital Statistics on Congress, a joint effort undertaken by Norm Ornstein of the American Enterprise Institute and Tom Mann of Brookings, in collaboration with Michael Malbin of the Campaign Finance Institute, has been a go-to reference guide for Congressional watchers for impartial data on Congress and its members.
https://www.brookings.edu/research/reports/2013/07/vital-statistics-congress-mann-ornstein
Tags: Data
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