It’s the biggest field for a GAA presidential race in 27 years. On the evening of Friday, February 25, Congress delegates in Croke Park will be asked to select one of five men — Frank Burke (Galway), Robert Frost (Clare), John Horan (Dublin), Martin Skelly (Longford), Seán Walsh (Kerry) — to succeed Aogán Ó Fearghail as GAA president in 12 months.