Dick and Danielle are going to do what they can to make sure they're in the final three.
When you look at the jury house you find: Dustin, Jen, Amber, Jess, and Eric. All of which if it came down to a vote between Dick and Jameka or Dani and Jameka, Jameka would win by default cause she's def less evil than Dani or Dick (if you will).
Also remember, that the final 3 compete in the final HoH and I don't think Zach would give up that easily to Dick or Dani with 500g's riding on whether or not he gets HoH or not. Ultimately, he could get 2nd place against Dick or Dani.