I think casuals couldn't see past her deficient and antagonistic character enough to vote for her. Any fanbase she has will be extremely small. It might be enough to see her make it past Daniel, but Chris should pick up enough votes due to familiarity to outpoll her.
She's ghastly but I want her to stay a bit longer. Janice and Jenna are more instrumental in keeping the house mood so low, Farrah is just a complete narcissist.