[I suspect we have people voting for what they have, not the ideal handgun.
All the usual suspects, Glock, S&W, and Ruger. Not that they are bad, but if I could only have one, I'd rather have a Cadillac than a Chevy. (and I own a S&W and a Ruger.)/QUOTE]
I do not think so. I think people are voting for the one handgun that is best for them. For example, I own 1911's, HK's, and Glocks along with S&W and Ruger revolvers.
I would never pick a semi-auto as my "one handgun. That leaves revolvers. SA's are out, so that leaved DA revolvers. My 2.5" Model 19 is sweet for CCW and the 4" Model 19 is great for night stand and so-so for CCW. My 686's and 586's are nice, but not my pick as the do-all revolvers.
My pick for "one" handgun is the 4" GP-100. I pick it, for the reason's I posted above. It is "my" ideal one handgun.
If another person person chooses something different, than so be it. Their choice, is the ideal pick for them.