Ways to research Congress

Floor votes

1. Search floor decisions

   Filter House and Senate rolls by chamber, date, outcome or subject.

   Voteview vote search ↗
2. Follow one measure across chambers

   See the separately worded questions and dates on the same measure, including its House and Senate votes.

   U.S. Senate roll and measure record ↗
3. Find the closest House votes

   Rank verified House tallies by the distance between Yeas and Nays. A tied vote has a gap of zero.

   House Clerk vote archive ↗
4. Check a passage threshold

   See how many Yeas a verified two-thirds suspension question required and how far the result was above or below that threshold.

   House Clerk’s suspension roll ↗
5. Find who voted which way

   Filter the matched roster on a single roll by name, state, party or recorded position.

   House Clerk’s member-by-member vote ↗
6. Inspect state delegation splits

   Find which state delegations split or aligned on one question. Other recorded positions remain visible.

   Voteview roll-call map ↗
7. Identify exceptions to a party majority

   See named members who opposed the strict Yea/Nay majority among their party’s matched positions on that roll.

   ProPublica Congress API vote and party data ↗
8. Compare two rolls member by member

   See which positions changed between two questions in the same chamber. Both question texts and sources are visible.

   GovTrack’s roll-comparison implementation ↗

Campaign money

9. Find a committee behind an organization

   Search by filed name, connected organization or FEC committee ID.

   FEC committee research guide ↗
10. Trace how a committee raised money

    Inspect receipt categories, transfers and refunds in the selected reporting period.

    FEC PAC and party financial summaries ↗
11. Find a committee’s direct payments to campaigns

    Select a committee and trace eligible contribution records to named congressional campaigns and original filings.

    FEC committee-to-candidate itemizations ↗
12. Find contributors shared by two candidates

    Choose two candidates and compare their reported direct contributions from the same committees.

    Donor Overlap’s candidate comparison ↗
13. Identify outside spenders on one candidate

    See which committees reported spending to support or oppose a candidate, and open their filings.

    ProPublica independent expenditure research ↗
14. Trace a spender across states

    See which candidates the same spender supported or opposed, then inspect records for a selected state.

    ProPublica Itemizer’s spender records ↗
15. Follow a committee’s monthly activity

    Compare dated direct payments and independent spending with the underlying transactions.

    FEC spending search ↗
16. Compare a committee across election cycles

    Read receipts, spending, cash and debt beside the actual reporting cutoff for each cycle.

    FEC committee financial profile ↗

Committee work

17. Browse committees and their subcommittees

    Search by chamber or name and navigate from a parent committee to its subcommittees.

    House Clerk committee directory ↗
18. Find committee members and officers

    See the named members, explicitly reported positions, and ways to contact each serving office.

    Senate Finance membership ↗
19. Trace bill referrals between committees

    Find a measure’s referral records and navigate to another panel named in its history.

    Congress.gov committee endpoint ↗
20. Read a committee activity ledger

    Inspect hearings, markups and reports in date order, with the specific bill and original action.

    UK Parliament public bill committee proceedings ↗
21. Find bills by committee progress

    Group the docket by its furthest observed committee step and open the individual measures.

    Senate guide to legislative status ↗
22. See a committee’s policy portfolio

    Compare official policy areas within one docket and open the bills classified under each area.

    Congress.gov bill policy-area data ↗
23. See which members sponsor the committee’s bills

    Distinguish sponsorship from current cosponsorship, then open a named member’s measures in this docket.

    Library of Congress sponsorship search ↗
24. Open the committee’s written report

    Trace a numbered House or Senate report to its bill and the published report itself.

    GovInfo congressional reports ↗

District research

25. Explore serving House district boundaries

    Select a district on a state map and open the serving office, its email options or its public record.

    ODFFU district map and representative finder ↗
26. Look up a House district by street address

    Submit an address to the Census Geocoder and open its matched 119th Congress district. Ambiguous results are identified.

    U.S. Census Geocoder ↗
27. Read a district’s community profile

    See population, median age, household income, rent and owner-occupied home value, with survey margins and table sources.

    Census Reporter district profile ↗
28. Compare districts with sampling uncertainty

    Put two 2025 ACS district estimates side by side. See the difference and whether it exceeds their combined 90% margin.

    Census statistical testing tool ↗
29. Find the districts that share a county

    Choose a county and see the share of its land in each House district. The lookup also works from a district to its counties.

    Census congressional district relationship files ↗
30. Trace who represented a numbered seat

    Follow House service records since 1973 and open official biographies, with a note about changing boundaries.

    Ballotpedia district representation history ↗

Latest additions