Innovative Federal Strategies was named a top lobbying firm in Washington, DC for their work on behalf of clients again in 2019. Information regarding the metrics used by Bloomberg Government with a complete list of the top firms can be found via the report on their website.

https://about.bgov.com/top-lobbying-firms/

The influence industry is booming. With lobbying revenue reaching levels not seen in a decade and revenue growth expected to accelerate, you need to know
who the power players are and the top lobbying firms in D.C. Bloomberg Government looked at the 2,139 registered lobbying firms that filed Lobbying Disclosure Act reports with the Senate during 2019. This report focuses on lobbying activity of 302 top lobbying firms — those that reported $1 million or more in revenue in 2019.