Compute 2025 lobbying income per firm and client from LDA filings where the latest amendment or termination…

Compute 2025 lobbying income per firm and client from LDA filings where the latest amendment or termination…: a task in pool-desk (Harbor dataset). Hi, I'm compiling what six lobbying firms reported earning from each client in 2025 under the Lobbying Disclosure Act, and I need one clean figure per…