Asking for it

Walking past a 7-Eleven today, I noticed a large sign in the window promoting their coffee cup poll on the election. The simple idea is that you buy your coffee in either a red paper cup with 'McCain' written on the side, or a blue paper cup emblazoned with the name 'Obama', allowing 7-Eleven to get free publicity by figuring out the broad voting preferences of people too lazy to make their own coffee and too poor to go to Starbucks - a key demographic if there ever was one.
Of course, the real point here is that you get to walk through the streets proudly declaring your political affiliation, which I believe is the twenty-something equivalent of wearing t-shirt with your favorite band on it - or at least, the current cool "favorite band' in your high-school, because teenagers rarely have independent musical taste (unless they identify with a particular sub-group and wear the appropriate band t-shirt to retain their rank in the group hierarchy. It is actually a wonder some of these bands release music at all, when simply by producing the right kind of t-shirt they can leap in popularity: any band whose t-shirt involves a weird symbol on black with gothic writing will become the in thing for the goths, even if they actually play light jazz. The only truly appropriate t-shirt is this). This is essential in attracting an appropriate mate, reinforcing your membership of your social group, and announcing that you hold the ‘correct’ opinions. (That goes for both the coffee cup and the band.).
My problem with this coffee-cup thingy is, however, that I am currently in San Francisco. Did 7_eleven even bother stocking any red cups here? If I went in and tried to order one, would the poor guy serving* look at me blankly and mumble something about having to check out the back? If I even managed to purchase a coffee in a red cup, how far down the street would I manage to get before some SF nutjob charged up and accused me of being a fascist, pro-life, gun-toting creationist? I’m guessing less than three feet, depending how many of SFs homeless I have to walk round on the way.
Anyhow, seeing as I actually can’t vote here, I have a cunning plan: next time I go to Starbucks I will give my name as ‘David Cameron’ so they scribble that on the side of my cup and I can walk around the city proclaiming my actual intended vote. At least in that situation I am relatively safe in that anyone who understands the reference and can work out my political views from it is probably polite enough not to mention them.

*OK, 7-Eleven may be self serve. I don’t know. I go to Starbucks. Or Peets. Or make my own damn coffee in my very fine French Press.