Given that there are large policy and personality differences between and within all parties, the process of forming the next government is going to be very difficult. The evidence from past coalitions in Ireland and across Europe is that the fewer numbers in a coalition the better. They also work only if they adhere to written policy objectives. The theory is that these provide stability and ensure effectiveness. Below are the only four plausible options, rated on a five-point scale for stability and effectiveness.
Option one: a coalition of Fianna Fáil, Sinn Féin, and either the Greens, Labour or the Social Democrats or even all three