I contacted a former colleague of mine who suggested I send them my resume. The first hiring authority, who would have been my supervisor, contacted me and we set up an interview time. It was very relaxed, and consisted largely of his desire to get to know me better -- why I wanted to work in the office, how much did I know about how a Senate office operated, etc. Then we spent awhile discussing policy issues that were of mutual interest to us, and he allowed me to pick his brain as far as what might happen in the future. Overall a fun conversation, although it felt a bit rushed (I was notified hours before the interview was to take place) and never materialized into anything.