The cohort of students you with (in my program, I was 1 of 18). You're all the top public policy/law students in the nation and you're all in this together in a year of intense immersion into the policy-making process. These are friendships (and networks) you will keep for life.
You will encounter deeply disturbing calls from constituents that will shake you. But it motivates you to keep going and fighting for good legislation.
Advice to Potential Interns
If you make it to the interview round, you're 80% there. At this point, they are just trying to find our if the person matches whats on paper. But please remember that because you'll be in a legislator's office with 5-8 coworkers, they also have to like you. You'll be in the trenches, hearing sensitive information, and I think they are seeking a level of maturity, loyalty, and sincere likability so that you can survive the social/political aspect of the legislative process during the fellowship.
Advice to Management
Promotion policies once you're hired are kind of nebulous. We don't have the protections of state workers, even though the public would think that we are classified as state workers. We don't have the same labor protections and can be fired at anytime, for any reason (at-will employment). You can only get a 5% raise every 3 years, unless you move to a new position under a different classification. So dedication to one senator or assembly-member really isn't in your best interest.
Sample Interview Questions
What would you do if your senator/assemblymember voted on a bill in a way that was contrary to your personal beliefs? Why should we choose you to be a Capitol Fellow? Why are you interested in a career in public policy?