New: T3 Sixty releases Tech500, its’ lists of Top Technology Providers based on the T3 Technology Landscape. 

Power 200 Rank


Shannon McGahn

SVP of Government Affairs

National Association of Realtors

As senior vice president of Government Affairs for the U.S.’s largest trade association in NAR, McGahn helps give voice to more than 1.3 million members. Before joining NAR, McGahn served as counselor to the U.S. Treasury Secretary and staff director for House Financial Services Committee.

Evaluating Leaders

Leaders are evaluated based on the office they hold, the decision-making power associated with the office, the financial resources at their disposal, their organization’s industry significance and geographical reach, public announcements about imminent changes, their tenure and their personal influence in the industry.