http://moneycentral.msn.com/content/CNBCTV/Promos/P92652.asp?ShowResults=1&HasVotedTwice=1,#Vote
In HTML code parlance, HasVotedTwice seems to indicate a database value, and the value of '1' seems to indicate that the server recognizes that the person has already voted, as opposed to a value of '0' which would indicate that the person hasn't voted already.
An interesting observation.
Good catch.