The Government spent over €40,000 on research into 'voter behaviour' in the Oireachtas Inquiry Referendum, according to figures released from the Department for Public Expenditure and Reform.

As part of the Programme for Government, the Department has published the list of all purchase orders over €20,000.

The list reveals that Red C Marketing was paid €41,043.20 by the Government for analysis of voter behaviour on the referendum.

The referendum on Oireachtas inquiries was rejected by voters by a margin of more than 100,000 votes.