 The republican idea that all promagisterial imperium ends upon entering the city was not observed in the emperors' case.At the same time, the legislation was practically passed from the Curiate Assembly to the Centuriate Assembly (and Tribal Assembly), with the exception of the formality, more or less, of a "lex curiata de imperio", which ratified the elections of the previous Centuriate Assembly.The consuls did, however, retain the power to rule by ordinance.