There's one reason why I think that they've already set up for Beth to win regardless of audience vote.
If you've been watching the Marathon today, there's been several types of commercials playing. A couple are recaps of the season, one is to remind you to vote, and two are Beth and Duncan's "reviews", the ones that are on the CN website.
However, a really short one has been playing more frequently than any other; it just has the line "In four days, no more Mr. Nice Girl", along with Beth saying how nice she is. To me, that just screams a potential setup for a huge change in Beth, which can be backed up by Top Dog (did you see the look on her face when she received her Gilded Chris? Pure evil!) as well as her willingness to fight in Mutiny. The Aftermath could be a way to show how far she's come from a pathetic wannabe to someone who actually worked to deserve the money.