Last updated: January 2014

Roll Call’s Fabulous 50 showcases Capitol Hill’s leading staffers – the people behind the scenes who wield the power and drive their party’s message.

Roll Call’s House and Senate reporters and editors determine the list based on their institutional knowledge of what positions hold the most power, as well as shoe-leather reporting on which individuals, regardless of position, wield the most influence.

Each staffer’s value is then determined based on the following criteria: