A "sitting legislator" refers to a person who currently holds an elected position in the legislative branch of government. They are actively serving as a lawmaker at the present time. Full definition
I've been very aggressive in bringing public integrity cases and public corruption cases and bringing cases against sitting legislators.» (newyork.cbslocal.com)
Cap outside income at 15 % highest salary of sitting legislator. (reinventalbany.org)
Cody is the second sitting legislator who was appointed by Mahoney. (syracuse.com)