Those members of the Irish House of Commons to sit at Westminster were selected by drawing lots .
Westminster represented constituencies still enfranchised after the Union but reduced from two members to one ( the remaining 31 most considerable Irish boroughs and Dublin University ) .
Those members of the Irish House of Commons to sit at Westminster , who represented constituencies still enfranchised after the Union but reduced from two members to one ( the remaining 31 most considerable Irish boroughs and Dublin University ) , were selected by drawing lots .