The Collaborative International Dictionary of English v.0.48:
Legislatorship \Leg"is*la`tor*ship\ (l[e^]j"[i^]s*l[=a]`t[~e]r*sh[i^]p), n. The office of a legislator. --Halifax. [1913 Webster] LegislatressWordNet (r) 3.0 (2006):
legislatorship n 1: the office of legislator