Fianna Fáil's support among the farming community has fallen by 21% since May of last year, according to an opinion poll published today.
The Red C poll in the Farmers Journal puts support for the main government party at 25%.
Fine Gael's support among farmers has increased by 22 points to 62%.
Labour's support is up one point to 3%, while the Green Party's support is down two points to 1% and Sinn Féin is unchanged at 3%.
Support for independent candidates is also unchanged at 6%.