Clever Idea!
I definitely like your concept! :)
Unfortunately, since I prefer Pepsi, I had to give you a zero. ;)
There's only one problem I see: since Newgrounds weights the votes, it may not be an actual representation. For example, my vote was worth 5.09 votes. On the odd chance that Coke drinkers are all newbies or never registered, Pepsi could get the unfair win.
Oh well. Regardless, as of this review, Pepsi is winning. :)