found: Work cat.: Sanders, Bernard. Our revolution, 2016:p. 1 (When we began our race for the presidency in April 2015 ... I was a senator from a small state with very little name recognition) p. 28 ([Patrick] Leahy and I now serve together in the Senate)
found: Merriam-Webster dictionary online, Feb. 2, 2017(senator: a member of a senate)
found: Cambridge dictionary online, Feb. 2, 2017(senator: a member of a senate, esp. of the US Senate)
found: Member guide for 114th Congress, viewed online Feb. 2, 2017:home page (This online Guide to the House and Senate Members of the 114th Congress is intended to be a single point of access for Member information from several different official sources)
found: Champion, A.B. Attitudes of the Alabama State Senate members in the 1995 General Session toward selected reform recommendations, 1995.
