The President, Mrs Mary McAleese, is to be asked to examine the constitutionality of the Electoral Amendment Bill which will see Leitrim divided into separate Dáil constituencies.
The Bill, which is expected to come before both houses of the Oireachtas before the summer, would give effect to the recommendations of the constituency commission.
The Save Leitrim Campaign said yesterday it hoped the President would consider convening a meeting of the Council of State because the issue should be tested in the courts.
Mr Cormac Ó Súilleabháin, a spokesman for the campaign, said a fundraising drive is already under way with a view to launching a court challenge to the constituency review.
Mr Ó Súilleabháin said that an approach would be made to Mrs McAleese within weeks.
Campaigners believe that if Leitrim is divided into two constituencies, Sligo-North Leitrim and Roscommon-South Leitrim, it will be almost impossible for the county, which has the smallest population in the country, to return a TD.
Mr Ó Súilleabháin said the basis of the challenge would be that Leitrim people would not have an equal opportunity to quality representation. The group's legal advice was that a more general challenge could be mounted on the basis that the creation of three-seater constituencies in rural areas damaged the equality of representation.
A delegation from Leitrim County Council recently met the Minister for the Environment, Mr Roche, on the issue. It was made clear that the Government would not overrule the constituency commission. However, it was suggested that the status of the constituency could be reviewed after the 2006 census.
A number of public meetings were held on the issue throughout the county in recent months.
Leitrim associations in New York, London and Manchester, are expected to hold fundraising events to support the planned legal challenge.
An estimated 15,000 people in the county have signed a petition, urging that the status quo be retained, that Sligo-Leitrim remain a four-seater constituency.
