The Senior Warden for the 6017 Masonic Year is Brother Bill Reid.
The Senior Warden (sometimes known as First Warden) is the second of the three principal officers of a lodge, and is the Master's principal deputy. Under some constitutions, if the Worshipful Master is absent then the Senior Warden presides at meetings as "acting Master", and may act for the Master in all matters of lodge business. Under other constitutions, including Grand Lodge of England and Grand Lodge of Ireland, only sitting Masters or Past Masters may preside as "acting Master", and so the Senior Warden cannot fulfill this role unless he is also a Past Master. In many lodges it is presumed that the Senior Warden will become the next Worshipful Master.
(From Masonic Lodge Officers - Wikipedia, the free encyclopedia. Available HTTP http://en.wikipedia.org/wiki/Masonic_Lodge_Officers#Senior_Warden, retrieved 3/16/12.)