New figures show Fine Gael spent €332,000 of public funding carrying out opinion polls last year.
The figures are revealed in filings to the public ethics watchdog, SIPO.
Sinn Féin was the only other party to spend public funds on polling, spending €10,000 last year.
The data also confirms that none of the six parties represented in the Dáil paid any additional salary to their party leaders in 2013.