Check the Setup
- Python 3.10 or newer
- A notebook environment such as Jupyter or Google Colab
- An internet connection
Microproduct Data GuideIntermediate
Senate LDA Lobbying Disclosures
Federal lobbying registrations and activity reports for building client and issue disclosure monitors from Senate LDA filings.
Report a ProblemAt a Glance
- Difficulty
- Intermediate — some data preparation helps
- Size
- Medium · ≤1 GB
- Formats
- JSON, XML
- Access
- API or Download
- API Key
- Not Required
- Provider
- United States Senate
- Updates
- Daily
- Last Verified
- Aug 18, 2026
- Source Type
- Government Source
- Python Syntax Checked
From Source to Product Signal
Test a Product Idea in Four Steps
The Senate LDA API lists lobbying filings, registrants, and clients. Start with a small page of recent filings. Reported income is self-disclosed, issue codes are broad, and a filing is not a complete map of influence.
Access the Data
- 1.Open the LDA API documentation and choose the filings list endpoint.
- 2.Request one page of recent filings.
- 3.Keep filing UUID, registrant, client, and filing type.
3
Run the Python Example
Install the packages, then run the notebook cell.
python -m pip install pandas requests
import pandas as pd
import requests
response = requests.get(
"https://lda.gov/api/v1/filings/",
params={"page_size": 25, "ordering": "-dt_posted"},
timeout=30,
headers={"Accept": "application/json"},
)
response.raise_for_status()
filings = pd.json_normalize(response.json()["results"])
filings["retrieved_at_utc"] = pd.Timestamp.now(tz="UTC")
print(filings.head())4
Test a Useful Signal
Scan Recent LDA Filings
Test whether the filings list can power a bounded lobbying-disclosure inbox.
- 01Keep filing identifier, registrant name, client name, and posted date.
- 02Count filings by registrant on the first page and list missing client names.
- 03Explain that LDA reports are self-disclosed summaries and are not a complete record of lobbying contacts.
Dataset Details
United States Senate is a government source. Last verified 2026-08-18. Temporal coverage: LDA registrations and quarterly activity reports.
Theme
Geography
Provider
United States Senate
Data Terms
U.S. Government public data / federal copyright guidance