I am trying to put myself in the shoes of the Davids. After the IC we see them sitting together on the beach and Nick is telling them all about their advantage. We know that three of them know that they have the idol nullifier, and the steal a vote. Right now the numbers are 5Davids to 6 Goliaths. So, whatever the Goliaths are cooking up, the Davids would be smart not to buy what they are selling. They proved last episode that they cannot be trusted and we hear Nick exclaim, "The Goliaths are lying to me, AGAIN!"
So, if they use the steal a vote, they not only take away one of the G's votes, but they can USE it to vote. So, it effectively will change the numbers from Goliaths up 6 to 5, to the Davids up 6 to 5.
So, they just have to figure out who of the Goliaths is least likely to have an idol. I highly doubt that they put their votes on Dan, as he's found an idol, and like Davie, he knows what to look for. That leaves Kara, Mike, Angelina, Alison, Alec.
For me I know that Nick has a connection with Mike & Nick. Gabby has a connection with Alison. I have narrowed it down to Angelina or Kara. At this point it's really a guess as to which one?
No doubt that Kara is having a spike, and that make me think it could be her boot episode. But Angelina is falling off the radar, could be hers too?