Where there are 2 or more additional judgeships created in any judicial district or circuit, to be filled at the same general election and to be elected from the same district, circuit or county, each such additional judgeship shall be designated by the State Board of Elections by a letter of the alphabet beginning with the letter “A”. Such designation shall be made no later than one day prior to the first day for filing of nominating petitions for such additional judgeships. Each candidate for such additional judgeship shall specify to the State Board of Elections upon the filing of his nominating petitions the judgeship for which he seeks nomination. Such candidates shall be nominated and elected for the judgeships which they have designated.