The election was followed by further criticism of the UK electoral system. Calls for reform came particularly from Lib Dem supporters, citing that they received only just over 10% of the overall seats with 22.1% of the popular vote. The only parties to win a substantially higher percentage of seats than they achieved in votes were Labour, the Democratic Unionist Party, Sinn Féin, and Health Concern, which ran only one candidate. The results of the election give a Gallagher index of dis-proportionality of 16.76.