I got a letter yesterday. It was addressed to Mr R and Ms J Observationz (not really, but similar).
In common, I would think, with a lot of people, I live with my partner - we aren't married yet, and she certainly doesn't use my name. Most people would either write to us separately or to both of us by our individual surnames.
I can only guess that someone assumes that if two people of the opposite sex live together, they must be married, or brother and sister. Guess who that might be?
Not hard is it - the National Party!
Both of us might consider their kind offer to vote for them (or possibly they expect the male to cast both votes in some sort of Victorian/Exclusive Brethren style). However I think we both fail their test of mainstream-ness:
Me: Immigrant (not from Singapore), living in sin, no kids
My partner: Female, living in sin, no kids, under 40.
Possibly everyone should consider their compatibility with the "mainstream" before voting for Brash (aka Victorian Dad).