The Irish National Election Study (INES) is an extensive five-wave panel survey of (initially) 2663 respondents carried out by the ESRI through the period 2002-2007 and encompassing the Irish general elections of 2002 and 2007 as well as the local and European Parliament elections of 2004. This was the first ever such study of electoral behaviour in the Republic of Ireland. It was funded initially by a grant to TCD/UCD under the PRTLI/National Development Plan. This part of the research was directed by a team led by Michael Marsh (TCD) and Richard Sinnott (UCD) as principal investigators, assisted by Dr John Garry and Dr Fiachra Kennedy who were post-doctoral students attached to the project. Kenneth Benoit, Michael Laver, Michael Gallagher, Gail McElroy (all then TCD) and John Coakley (UCD) were associate investigators. This grant covered a post election face-to-face survey in 2002, and mail follow-ups with the same sample in 2003, 2004 and 2006. An infrastructure programme grant by the Irish Research Council for the Humanities and Social Sciences to Michael Marsh allowed a second face-to-face survey, again with the same sample, after the 2007 election, along with a supplementary sample to provide for a more representative sample for that year.