If November 1st is a Monday then the first Tuesday after that is the first Tuesday of the month.
pointing it out because it's always the first Tuesday unless that 1 out of 7 where you have to wait a week -1 for the first Monday.
I think the reasoning is something like "we need to have a full business day in November before we have an election, that will give us a chance to fix problems or something"... not sure if under the old county/shire system months made a difference or something.