Share of the vote in general and by-elections, 1923-2016

fig101

Note: Blue columns indicate governments led by Cumann na nGaedhael/Fine Gael; green columns indicate governments led by Fianna Fáil

Sources:
1922-44: Gallagher, M (ed) (1993), Irish Elections 1922-44: Results and Analysis, PSAI Press: Dublin
1948-2011: Official election returns
2011-2016: RTÉ election results system

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