Every member of Congress takes money. The question is whether it changes how they vote. This Index answers that question, member by member, score by score.
Most exposed
Highest exposure to donor influence. Voting patterns, contribution timing, and financial ties most closely track the money behind them.
Highly exposed
Significant financial ties. Industry funding, lobbying access, and vote alignment indicate meaningful exposure.
Moderately exposed
Takes money, but the patterns linking it to voting behavior and policy are weaker.
Least exposed
Minimal financial ties suggesting donor influence on their votes.
The Index scores every member on twelve categories: direct contributions, outside spending, lobbying inside the policy areas they regulate, revolving-door lobbying access, vote alignment with funders, contribution timing around legislative action, dark-money concentration in outside spending, stock trades inside the industries they regulate, money distributed to other members, the breadth of a member's funding networks, committee jurisdiction power, and Israel-policy PAC money. Evidence of capture — how members vote, when money arrives, and whether they trade in the sectors they regulate — carries more weight than the money itself.