As of right now, between Josh’s plan to target Elena, and Cody’s safety, Jessica and Cody actually have a shot to make it through the week.
There’s also the chance that Josh will cave to Paul’s will and let the house send Jessica out regardless of whether or not Elena is nominated come Thursday.
But right now, Josh is literally whispering to the camera that he thinks Elena is lethal.
She’s playing the middle, and it’s best for his game if Elena goes.