|Assumed office |
|Born||19 March 1963|
Tralee, County Kerry, Ireland
|Political party||Fianna Fáil|
|Alma mater||Trinity College Dublin|
He gained the Fianna Fáil nomination in 2015, ahead of former North Kerry TD Tom McEllistrim, who lost his seat at the 2011 general election. As Norma Moriarty, Fianna Fáil's other candidate in Kerry was based in the south of the constituency, Brassil held the monopoly in a traditionally Fianna Fáil region of North Kerry.
Brassil was appointed by Micheál Martin as the Fianna Fáil junior spokesperson on primary care and community health services. He is a pharmacist by profession. He was a member of Kerry County Council from 1999 to 2016 for the Listowel electoral area.