This is my understanding of the votes this season, change if false.
F18: Zach, Tyler, Brian, Sergio, and Justin vote Crystal, Crystal votes Justin
F17: Zach, Tyler, Brian, and Sergio vote Justin, Justin votes Brian
F16: Zach, Tyler, and Brian vote Sergio, Sergio votes Zach
F15: Nick, Kasey, Noah, and Zach vote Ross, DJ and Ross vote Nick
F14: Zach, Tyler, and Brian vote Brian
—Dissolve—
F13: Purp, Alexander, Silver, and Zach vote Andrew, John and Andrew vote Zach, Cole Self-Votes
F12: Nick, Kasey, Noah, Tyler, and Zach vote DJ, DJ votes Zach
F11: Nick, Kasey, and Tyler vote Zach, Noah votes Nick, Zach votes Tyler
F10: Nick, Noah, and Noah’s Extra Vote vote Tyler, Kasey and Tyler vote Noah
F9: Nick and Kasey vote Noah, Noah votes Nick
—Merge—
F8: Purp, Alexander, John, Nick, Silver, and Cole vote Zach, Kasey and Zach vote Alexander
F7: Purp, Alexander, John, and Silver vote Cole, Nick, Kasey, and Cole vote Alexander
F6: Purp, Alexander, John, and Silver vote Kasey, Nick and Kasey vote Silver
F5: Alexander and John vote Nick (Don’t Count), Nick votes Alexander (Does Not Count), Purple votes Silver, Silver votes Purple
F5 (Re-Vote): Alexander, John, and Nick vote Silver
F4: Purp, Alexander, and John vote Nick, Nick votes Alexander