Sinn Féin President Mr Gerry Adams could be forced into court to face allegations he has abandoned 16,000 of his west Belfast constituents.
A petition signed by thousands of people in the staunchly loyalist Shankill Road area claims the Sinn Féin MP has failed them because he has boycotted the House of Commons.
West Belfast independent councillor and former member of the Ulster Democratic Party (UDP), Mr Frank McCoubrey, is now set to send the list to Mr Michael Martin who is Speaker of the House of Commons.
Mr McCoubrey, a former Deputy Mayor of Belfast, claimed: "This is a fundamental breach of these people's human rights. We are basically a forgotten community."
Sinn Féin's four MPs cannot sit in the Commons because of the requirement of elected members to swear an oath of allegiance to the English Queen.
Mr Martin will be asked to confirm Mr Adams's record of attendance and what disciplinary action can be taken against members who fail to represent their constituents in the House.
Once the Speaker responds to the letter, signed by 3,000 constituents, lawyers are planning to apply for a judicial review at the High Court in Belfast.
Mr McCoubrey was himself accused of not representing the interests of the Nationalist community in 2000 when as Deputy Mayor of Belfast, he shared a platform with masked UDA paramilitaries during an armed loyalist paramilitary show of strength.
Sinn Féin's accusation that Mr McCoubrey had failed to represent all of the people of Belfast and had brought the position of Deputy Mayor into disrepute was rejected by unionists at the time.
With McCoubrey's latest efforts expected to cost thousands of pounds, businessmen and other prominent community representatives on the Shankill are funding the campaign.
It is understood efforts are also being made to persuade a high profile constitutional lawyer from London to take the case.
Mr McCoubrey vowed: "If we don't get a result here then we go to Europe.
"There is an electorate of 16,000 people on the Shankill Road who have been misrepresented because Gerry Adams won't take his seat."
He claimed chronic unemployment, education and health problems in the area have been ignored for far too long.
Mr McCoubrey also claimed nationalists and republicans have been deprived of his backing in the fight to get tougher sentences for car thieves menacing parts of west Belfast.
"Gerry Adams is not even representing his own people," he said. No one from Sinn Fein was available for comment.