Original sentence: The principal objection of substance is that the Reform Movement appears to concede the idea that there may/should never be a united Ireland - the wish to see a united Ireland is a heartfelt principle for a sizeable number of people in the Republic(and Northern Ireland), even though a majority of the electorate voted to replace the Republic's territorial claim to Northern Ireland in the constitution with an aspiration to unity in exchange for a lasting peace process
Edited sentence: The principal objection of substance is that the Reform Movement appears to concede the idea that there may/should never be a united Ireland - the wish to see a united Ireland is a heartfelt principle for a sizeable number of people in the Republic(and the North of Ireland), even though a majority of the electorate voted to replace the Republic's territorial claim to Northern Ireland in the constitution with an aspiration to unity in exchange for a lasting peace process